In a statement, NATO said NATO Secretary General Mark Rutte will be in Washington on Monday and Tuesday and meet with President Trump and key administration officials.

Ukraine’s security agency says it has tracked down and killed Russian agents who assassinated a Ukrainian intelligence officer during the week.The SBU said in a statement said the Russian agents were killed after resisting arrest.

NATO Secretary General Mark Rutte is set to meet President Donald Trump this week on the heels of the U.S. leader announcing plans to sell NATO allies weaponry that it can then pass on to Ukraine.

Russian President Vladimir Putin’s forces launched a massive aerial assault on Ukraine early Thursday for the second time in two days.

President Trump is weighing new funding for Ukraine for the first time since taking office in January, diplomatic sources told CBS News.

EXCLUSIVE: People are exhausted, children wake up screaming, elderly neighbours spend nights in stairwells - and residents of Kyiv go to work, said Inna Sovsun.