Tensions rose after a blast damaged the Warsaw-Lublin rail line, which has been used to deliver aid to Ukraine, and a Russian missile attack killed at least 25 people in Ternopil.

Ukraine has asked the Vatican to formalize its role facilitating negotiations for the return of Ukrainian children and civilians taken by Russia during the war.

An explosion that damaged a Polish railway track on a route to Ukraine was an “unprecedented act of sabotage,” Prime Minister Donald Tusk said on Monday.

Russia is reportedly ready to provide technology transfer for the fifth-generation Su-57 stealth fighter jet to India. A rival of the American F-35 fighter jet, the Sukhoi Su-57 is known for its super-manoeuvrability.

Britain has warned Russia that it's ready to deal with any incursions into its territory after the spy ship Yantar was detected on the edge of U.K. waters north of Scotland.

Germany boosts military recruitment with free driving licenses and €2,600 monthly pay amid Russia threat and Trump's defense spending pressure on Europe.