Oil prices nudged higher on Monday, adding to gains of more than 2% from Friday, as investors eyed further U.S. sanctions on Russia that may affect global supplies, but a ramp-up in Saudi output and ongoing tariff uncertainty limited gains.

President trump has escalated criticism of Vladimir Putin amid a barrage of attacks on Ukraine and has hinted at tougher sanctions against Russia.

President Donald Trump said the US will send more Patriot air-defense batteries to Ukraine, which Kyiv has said it needs to protect itself from Russian airstrikes.

The U.S. will send additional Patriot air defense batteries to Ukraine, according to President Donald Trump who repeated his criticism of Vladimir Putin's aggression. Trump said Sunday that the U.S. would be reimbursed partially by NATO for the cost of the batteries which Kyiv has said are required to defense against Moscow's missile and drone attacks.