U.S. President Donald Trump's renewed threats against Iran have stoked fears of possible supply disruption in the oil-rich Middle East.

President Trump has dispatched naval assets to the Middle East, prompting fresh speculation that he’ll follow through on threats to attack Iran’s senior leadership amid a violent crackdown on nationwide protests.

Crude oil futures settled higher, then gave back most gains after-hours when President Trump said "the killing in Iran is stopping," an apparent sign of de-escalation between the US and Iran

President Trump’s strike options against Iran amid the nationwide protests are shaped by his massive military buildup in the Caribbean, which has ballooned since late last year and culminated in U.S.

India, Jan. 23 -- The United States is increasing military pressure on Iran as President Donald Trump confirmed that a large US naval force is heading toward the region. Trump said Washington is closely monitoring Tehran but stopped short of announcing any immediate military strike.

President Donald Trump is weighing a major new strike on Iran after preliminary discussions between Washington and Tehran over limiting the country’s nuclear program and ballistic missile production failed to make progress,

Iran on Wednesday rejected holding negotiations with the United States if it makes threats against the Islamic republic, after President Donald Trump refused to rule out military intervention over its deadly crackdown on protests.