Internet marketing workers, Murager Sharipov, 26, and his fiance Mariia Pasternak, 25, who volunteered to join the Ukrainian Territorial Defence Forces, pose for a picture during a training session, as Russia's invasion of Ukraine continues, in Odessa, Ukraine, March 18, 2022. Picture taken March 18, 2022. REUTERS/Nacho Doce 

Men, who volunteer for territorial defense take part in a training with weapons at a private company room following the Russia's invasion of Ukraine, in Lviv, Ukraine, March 23, 2022. REUTERS/Zohra Bensemra 

Ihor, 28, who used to be a sales manager, acts as a mock injured serviceman during drills carried out by territorial defence unit at a private company room following the Russia's invasion of Ukraine, in Lviv, Ukraine, March 23, 2022. REUTERS/Zohra Bensemra 

Men, who volunteer for territorial defense take part in a training with weapons at a private company room following the Russia's invasion of Ukraine, in Lviv, Ukraine, March 23, 2022. REUTERS/Zohra Bensemra 

Ihor, 28, who used to be a sales manager, takes part in a training with weapons at a private company room following the Russia's invasion of Ukraine, in Lviv, Ukraine, March 23, 2022. REUTERS/Zohra Bensemra 

Ihor, 28, who used to be a sales manager, acts as a mock injured serviceman during drills carried out by territorial defence unit at a private company room following the Russia's invasion of Ukraine, in Lviv, Ukraine, March 23, 2022. REUTERS/Zohra Bensemra 

Mykola, 27, who used to sell flowers, and other volunteers for territorial defense take part in a training with weapons at a private company room following the Russia's invasion of Ukraine, in Lviv, Ukraine, March 23, 2022. REUTERS/Zohra Bensemra 

Ihor, 28, who used to be a sales manager, takes part in a training with weapons at a private company room following the Russia's invasion of Ukraine, in Lviv, Ukraine, March 23, 2022. REUTERS/Zohra Bensemra TPX IMAGES OF THE DAY 

Internet marketing sales manager Maxim Yavtushenko, 32, and his girlfriend, graphic designer Olga Moroz, 26, who volunteered to join the Ukrainian Territorial Defence Forces, attend a guns training session, as Russia's invasion of Ukraine continues, in Odessa, Ukraine, March 18, 2022. Picture taken March 18, 2022. REUTERS/Nacho Doce 

Internet marketing worker, Mariia Pasternak, 25, and her mate, internet marketing sales manager, Maxim Yavtushenko, 32, who volunteered to join the Ukrainian Territorial Defence Forces, attend a training session, as Russia's invasion of Ukraine continues, in Odessa, Ukraine, March 18, 2022. Picture taken March 18, 2022. REUTERS/Nacho Doce 

Internet marketing sales manager Maxim Yavtushenko, 32, his girlfriend, graphic designer Olga Moroz, 26, Anastasia Dyachenko, 27, and Hrechka Natasha, 26, who volunteered to join the Ukrainian Territorial Defence Forces, attend a training session, as Russia's invasion of Ukraine continues, in Odessa, Ukraine, March 18, 2022. Picture taken March 18, 2022. REUTERS/Nacho Doce 

An instructor teaches how to use a weapon to internet marketing workers Murager Sharipov, 26, his fiance, Mariia Pasternak, 25, and their mate, internet marketing sales manager, Maxim Yavtushenko, 32, who volunteered to join the Ukrainian Territorial Defence Forces, during a training session, as Russia's invasion of Ukraine continues, in Odessa, Ukraine, March 18, 2022. Picture taken March 18, 2022. REUTERS/Nacho Doce 

Internet marketing sales manager Maxim Yavtushenko, 32, and his girlfriend, graphic designer Olga Moroz, 26, and internet marketing worker, Murager Sharipov, 26, who volunteered to join the of the Ukrainian Territorial Defence Forces, attend a training session, as Russia's invasion of Ukraine continues, in Odessa, Ukraine, March 18, 2022. Picture taken March 18, 2022. REUTERS/Nacho Doce 

Internet marketing worker Mariia Pasternak, 25, who volunteered to join the Ukrainian Territorial Defence Forces, attends a medical emergencies training session, as Russia's invasion of Ukraine continues, in Odessa, Ukraine, March 18, 2022. Picture taken March 18, 2022. REUTERS/Nacho Doce 

Internet marketing sales manager Maxim Yavtushenko (R), 32, and his girlfriend, graphic designer Olga Moroz (2ndR), 26, who volunteered to join the Ukrainian Territorial Defence Forces, attend a guns training session, as Russia's invasion of Ukraine continues, in Odessa, Ukraine, March 18, 2022. Picture taken March 18, 2022. REUTERS/Nacho Doce 

Mariia Pasternak, 25, who volunteered to join the Ukrainian Territorial Defence Forces, attends a guns training session, as Russia's invasion of Ukraine continues, in Odessa, Ukraine, March 18, 2022. Picture taken March 18, 2022. REUTERS/Nacho Doce 

A man who volunteered to join the Territorial Defence Forces holds a rifle during a weapons training, following Russia's invasion of Ukraine, in Odessa, Ukraine, March 11, 2022. REUTERS/Alexandros Avramidis 

Civilians who volunteered to join the Territorial Defence Forces train on weapons, following Russia's invasion of Ukraine, in Odessa, Ukraine, March 11, 2022. REUTERS/Alexandros Avramidis 

Civilians who volunteered to join the Territorial Defence Forces train on weapons, following Russia's invasion of Ukraine, in Odessa, Ukraine, March 11, 2022. REUTERS/Alexandros Avramidis 

Civilians who volunteered to join the Territorial Defense Forces train on weapons, following Russia's invasion of Ukraine, in Odessa, Ukraine, March 7, 2022. REUTERS/Alexandros Avramidis TPX IMAGES OF THE DAY 

Civilians who volunteered to join the Territorial Defence Forces train on weapons, following Russia's invasion of Ukraine, in Odessa, Ukraine, March 11, 2022. REUTERS/Alexandros Avramidis TPX IMAGES OF THE DAY 

Civilians who volunteered to join the Territorial Defence Forces train on weapons, following Russia's invasion of Ukraine, in Odessa, Ukraine, March 11, 2022. REUTERS/Alexandros Avramidis 

Civilians who volunteered to join the Territorial Defence Forces train on weapons, following Russia's invasion of Ukraine, in Odessa, Ukraine, March 11, 2022. REUTERS/Alexandros Avramidis 

Civilians who volunteered to join the Territorial Defense Forces train on weapons, following Russia's invasion of Ukraine, in Odessa, Ukraine, March 7, 2022. REUTERS/Alexandros Avramidis 

A civilian who volunteered to join the Territorial Defense Forces trains on weapons, following Russia's invasion of Ukraine, in Odessa, Ukraine, March 7, 2022. REUTERS/Alexandros Avramidis 

Civilians who volunteered to join the Territorial Defence Forces train on weapons, following Russia's invasion of Ukraine, in Odessa, Ukraine, March 11, 2022. REUTERS/Alexandros Avramidis TPX IMAGES OF THE DAY 

Civilians who volunteered to join the Territorial Defense Forces train on weapons, following Russia's invasion of Ukraine, in Odessa, Ukraine, March 7, 2022. REUTERS/Alexandros Avramidis 

Civilians who volunteered to join the Territorial Defence Forces train on weapons, following Russia's invasion of Ukraine, in Odessa, Ukraine, March 11, 2022. REUTERS/Alexandros Avramidis 

Civilians who volunteered to join the Territorial Defense Forces train on weapons, following Russia's invasion of Ukraine, in Odessa, Ukraine, March 7, 2022. REUTERS/Alexandros Avramidis 

A woman who volunteered to join the Territorial Defence Forces holds a rifle during a weapons training, following Russia's invasion of Ukraine, in Odessa, Ukraine, March 11, 2022. REUTERS/Alexandros Avramidis 

Civilians who volunteered to join the Territorial Defence Forces train on weapons, following Russia's invasion of Ukraine, in Odessa, Ukraine, March 11, 2022. REUTERS/Alexandros Avramidis 

Civilians who volunteered to join the Territorial Defence Forces train on weapons, following Russia's invasion of Ukraine, in Odessa, Ukraine, March 11, 2022. REUTERS/Alexandros Avramidis 

A civilian who volunteered to join the Territorial Defense Forces trains on weapons, following Russia's invasion of Ukraine, in Odessa, Ukraine, March 7, 2022. REUTERS/Alexandros Avramidis 

A man who volunteered to join the Territorial Defence Forces holds a rifle during a weapons training, following Russia's invasion of Ukraine, in Odessa, Ukraine, March 11, 2022. REUTERS/Alexandros Avramidis 

Civilians who volunteered to join the Territorial Defence Forces train on weapons, following Russia's invasion of Ukraine, in Odessa, Ukraine, March 11, 2022. REUTERS/Alexandros Avramidis 

A civilian who volunteered to join the Territorial Defense Forces holds a rifle during training, following Russia's invasion of Ukraine, in Odessa, Ukraine, March 7, 2022. REUTERS/Alexandros Avramidis