President Barack Obama's war on Islamic State jihadists could damage the militants without defeating them, while increasing the risk of America being sucked into Syria's hellish civil war, experts and former US officials say.
The United States warned it could launch a "massive military response" to any threats from North Korea following Pyongyang's provocative detonation of what it claimed was a miniaturized hydrogen bomb.
A deadly air strike on a UN aid convoy by Syrian or Russian planes calls into question Moscow's will to try to salvage a ceasefire, the United States said Monday.
The United States has warned Russia privately of "catastrophic" consequences if it uses nuclear weapons as part of the Ukraine invasion, top US officials said.
US Secretary of State Hillary Clinton warned Syria on Monday against taking destabilizing measures in either Iraq or Lebanon, during talks with her Syrian counterpart Walid Muallem in New York.
US officials have warned that Egypt and Jordan could annul their peace treaties with Israel and sever all diplomatic ties if the Jewish state attacks Iran's nuclear sites, a newspaper said on Thursday.
US Energy Secretary Jennifer Granholm on Wednesday warned against "manipulation" of gas prices in Europe, as a group of European lawmakers accused Russia of being behind price rises.
The United States warned Monday that Iran must be ready to discuss its "illicit nuclear weapons program" in crunch talks on October 1 with six world powers concerned about its atomic strategy.
The US government warned Tuesday that North Korea continues to acquire materials and equipment for its ballistic missile program, despite claims in Washington that Pyongyang has pulled back on its nuclear ambitions.
President Hassan Rouhani said on Wednesday that the United States' "warmongering" was a failure, as Iran welcomed the sacking of hawkish US national security adviser John Bolton.
The United States warned Wednesday that North Korea will face "severe consequences" if it continues with what Washington sees as its provocative decision to restart a nuclear reactor.
US trade negotiators want to make "meaningful progress" in upcoming talks with China, Treasury Secretary Steven Mnuchin said Thursday, one day after conciliatory gestures by both sides boosted hopes of an eventual resolution.
The US wants a diplomatic solution to the North Korean nuclear crisis, Defense Secretary Jim Mattis said Tuesday, as China warned there would be "no winners" in a war on the Korean peninsula.
The United States wants a diplomatic solution to the escalating nuclear crisis with North Korea, Defense Secretary Jim Mattis said Tuesday, toning down the shrill rhetoric between the two countries.
The United States said Wednesday it hoped the UN atomic agency would "very soon" give more detail on new information the watchdog has on possible military dimensions to Iran's nuclear programme.
The United States could be vulnerable to attack from long-range ballistic missiles unless the government overhauls the country's "fragile" missile defense system, experts said Tuesday in a report.
