NATO aircraft were scrambled Sunday night to respond to a Russian attack on Ukraine, the Polish military said Monday.

While faster than before, Russia’s territorial gains remain minor, with only 5,000 square kilometres (1,930 square miles) of Ukraine taken since the start of last year, less than 1% of the country’s overall territory, according to a June report from the Center for Strategic and International Studies, a Washington-based think tank.

The first explosions sounded in Ukraine’s cities before dawn Thursday as Russian President Vladimir Putin launched his long-anticipated military operation in Ukraine. Here’s what to know.

Ukraine launches offensive in Russian territory Ukrainian President Volodymyr Zelenskyy acknowledged for the first time that his country's military forces were fighting in a surprise military ...

National Security As it weighs action in Ukraine, Russia showcases its new military prowess January 26, 2022 More than 3 years ago

During the night, Ukrainian forces carried out a major drone attack on Russia's Rostov region, during which the railway infrastructure in the city of Salsk was hit, local Russian officials confirmed.