Russia is massing troops along NATO's borders and expanding military units while giving them combat experience, creating the backbone of a fighting force.

Dispatches from Ukraine. Day 1,473.

Russian ships hit, 3 sailors killed in Ukrainian strike on Black Sea port, SBU source says * Russia continues to escalate drone attacks on passenger trains, railway

Watch FRONTLINE’s documentaries examining the conflict’s evolution, Vladimir Putin’s grievances with the West and crackdown on dissent at home, and the human toll of war.

The U.S. Treasury Department’s decision to allow India to buy Russian oil for 30 days underscores a boost for Moscow's fortunes against the backdrop of the Iran war as Russia's oil export earnings hel

Russian attack kills 11 in Kharkiv, including 2 children * Ukraine halts Russian offensive toward Zaporizhzhia, killing, injuring 300 Russian troops, HUR claims *

Russia's response to the escalating conflict in Iran highlights its strategic calculations, focusing on potential economic gains while maintaining a cautious diplomatic stance.

The Iran war's disruption of Middle East oil and gas supplies and soaring prices are strengthening Russia's ability to profit from its energy exports, a pillar of the Kremlin's budget and a key to paying for its own war in Ukraine.

President says Iran's military is "gone" nearly a week after the U.S. and Israel started its coordinated military action against Tehran.