“The United States is calling on all parties to the conflict to de-escalate,” Blinken was quoted as saying by the State Department website.

He noted that the escalation of hostilities only exacerbates the humanitarian crisis in Yemen.

Earlier, the Yemeni Houthis (members of the Shiite movement Ansar Allah) threatened the United Arab Emirates to create "a real danger to their economy and foreign investment" if they "continue aggression."