Ukraine has launched a series of strikes into Russian territory using Western-supplied weapons, a senior Ukrainian official said on Sunday, a move that could mark a significant escalation in the conflict.

What Ukraine Has Lost Ukrainian soldiers stand guard at a checkpoint in the village of Shyrokyne, near the town of Mariupol, on Feb. 18, 2015. AP Photo/Evgeniy Maloletka

The European Union is facing a crisis of legitimacy, with the rise of populist, nationalist parties that are challenging the very foundations of the bloc. These parties, which have gained significant ground in recent years, are united by their opposition to immigration, their skepticism of globalization, and their rejection of the EU’s institutions and values.

-Controlled Territories U.S. Secretary of State Antony Blinken hinted on Sunday that the United States may allow Ukraine greater latitude to strike at targets in Russia-controlled territories, as the war in Ukraine enters its second year.

By ANDREW E. KRAMER KIEV, Ukraine — Ukraine’s military has been given permission to fire into Russia if it is attacked, a senior Ukrainian official said on Tuesday, a move that could escalate tensions between the two countries.

Probe A deepfake video of a U.S. official appeared online after the Justice Department said it would no longer prosecute two Ukrainian officials accused of tampering with the 2016 election.