A summary of recent key developments - / US forces have launched what officials describe as "limited defensive" strikes against Iranian targets in the Strait of Hormuz, following surface-to-air missile threats and reports of explosions on Iran's Keshm Island, according to US media. - / US President Donald Trump is raising the possibility of targeting a suspected underground nuclear facility in Iran known as Mount Makush, saying that US forces "may have to go after" the compound. — / US Vice President J. De Vance reports "progress" in indirect negotiations with Tehran, although Iranian officials say Washington must end its naval blockade and accept Tehran's terms before a deal can be reached. — / Oil prices rose following reports of American attacks on Kesham Island, with Brent oil futures rising 0.5% to $105. 25 per barrel at the beginning of trading on Tuesday. - / The government of Yemen supported by Saudi Arabia calls on the UN Security Council to strengthen measures preventing Iranian arms shipments to the Houthis. - The government forces supported by Yemen by Saudi Arabia report one soldier killed and 14 wounded while resisting the attack of the Houthis in Taiz province.