Gershkovich is the first US journalist detained in Russia on espionage charges since the end of the Cold War.
Want to work from home? Being a spy might not be for you, in that case.
"First is the cessation of hostilities. Second is a framework for lasting peace," South African Presidency Spokesman Vincent Magwenya said.
A separate source familiar with the investigation was not optimistic about the chances of a breakthrough in the long-running case, adding: "It will come to nothing."
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Yusov said the Belgorod operation would create a "security zone" to protect Ukrainians from cross-border attacks by Russia.
"Our goal is to continue to differentiate Ramat Aviv Mall as the leading mall in Israel that offers quality and luxury brands."