Russia launched its largest barrage of drones and missiles in a month across Ukraine, killing at least three people, Ukrainian President Volodymyr Zelensky said Saturday, as a Kyiv delegation heads to the United States for fresh peace talks.

Her arrest, along with four others, follows the dramatic resignation from parliament last Friday of Duduzile Zuma-Sambudla, the daughter of South Africa's former President Jacob Zuma, who has been accused of duping the 17 South African men - including some of her relatives - into fighting for Russia, an allegation she denies.

Diplomats face an uphill battle to reconcile Russian and Ukrainian “red lines” as a renewed U.S.-led push to end the war gathers steam, with Ukrainian officials attending talks in the U.S. over the weekend and Washington officials expected in Moscow early this week.

Top Russian banker Andrei Kostin said that Moscow would retaliate if the European Union used frozen Russian sovereign assets for a loan to Ukraine, and said Moscow could unleash half a century of litigation over the money.

Nonkululeko Mantula, 39, was arrested alongside four men after a tip off, South African police said. She is accused of recruiting the four men and organizing for them to join the Russian army.

Her resignation comes as a South African allegedly recruited to fight in Ukraine recounts the horrors of war to the BBC.

Ukraine’s chief negotiator, in an exclusive interview, says conceding sovereign territory is off-limits in peace talks.

Russia said on Monday that remarks by NATO's most senior military officer that the U.S.-led military alliance could consider a "pre-emptive strike" to be extremely irresponsible and an attempt to move towards escalation.

Even if a peace can be reached, it won’t be easy to solve the problem of Ukrainian civilians languishing in Russian jails. This is one prisoner’s story.

The recent launch of a Soyuz rocket carrying three astronauts to the International Space Station has caused significant damage to Russia's only remaining launch pad capable of sending humans into space.