Oil prices have resumed their upward climb and U.S. futures are lower after Israel's military issued an evacuation warning to 330,000 people in Iran's capital Tehran.

Oil prices climbed over 2% on Tuesday as Iran-Israel tension intensified and U.S. President Donald Trump urged "everyone" to evacuate Tehran, increasing the prospect of deepening unrest in the region and disruption to oil supply.

Crude prices bounced as news of fresh attacks rolled in, including another wave of Iranian missiles launched at Israel and more Israeli strikes on Iran.