Russia's alleged war crimes in Ukraine are calculated, experts say: 'As shocking as it is, it's nothing new'

People worldwide have been shocked by gruesome images of corpses strewn in the streets of Bucha, Ukraine, as Russian forces pulled back in recent days, but foreign policy experts say the brutal tactics the Kremlin is using are nothing new.

Ira Gavriluk holds her cat as she walks among the bodies of her husband, brother, and another man, who were killed outside her home in Bucha, on the outskirts of Kyiv, Ukraine, Monday, April 4, 2022.  (AP Photo/Felipe Dana) Volunteers carry the bodies of murdered civilians in Bucha on Monday. (AP/Efrem Lukatsky) A dog lays next to the body of a civilian in Bucha, Ukraine on Sunday.  (REUTERS/Stringer TPX IMAGES OF THE DAY) Volunteers prepare to put the body of a civilian, who according to residents was killed by Russian soldiers, in a van carrying body bags in Bucha on Sunday.  (Reuters) Ira Gavriluk holds her cat as she walks next to the corpses of her husband and her brother, who were killed in Bucha, on the outskirts of Kyiv, Ukraine, Monday, April 4, 2022. Russia is facing a fresh wave of condemnation after evidence emerged of what appeared to be deliberate killings of civilians in Ukraine.  (AP Photo/Rodrigo Abd) A body with hands bound by white cloth, who according to residents was shot by Russian soldiers, lies in the street in Bucha, Ukraine, on Sunday. (Reuters/Zohra Bensemra) A Ukrainian soldier walks with children passing destroyed cars due to the war against Russia, in Bucha, on the outskirts of Kyiv, Ukraine, Monday, April 4, 2022. (AP Photo/Rodrigo Abd) A man stands alongside a bridge destroyed by Russian soldiers upon their retreat from villages on the outskirts of Kyiv, Ukraine, Friday, April 1, 2022.  (AP Photo/Rodrigo Abd) A residential building damaged by a military strike, as Russia's attack on Ukraine continues, is seen in Lysychansk, Luhansk region, Ukraine in this handout picture released March 30, 2022.  (Press service of the State Emergency Service of Ukraine/Handout via REUTERS)

"This is 100% intentional. It's not a lack of military discipline."

Ukrainian President Volodymyr Zelenskyy detailed the alleged atrocities in a speech to the U.N. Security Council on Tuesday after visiting Bucha, saying that Russian forces "killed entire families, adults and children, and they tried to burn the bodies."