Experts and lawmakers have raised concerns after President Donald Trump declared in a notice to Congress that the U.S. is in a formal “armed conflict” with drug cartels.

Protests have erupted around the world after Israel's interception of Greta Thunberg's aid flotilla, while the UK government says it is "very concerned" about the situation. Follow the latest below.

Fire crews were battling massive flames at a Chevron oil refinery just outside of Los Angeles on Thursday night. California ...