the orange man and the houthis; 

President Trump reportedly decided to end his short-lived war on the Houthis after being informed that the US had "burned through weapons and munitions at a rate of about $1 billion in the first month alone" and couldn't even establish air superiority.

From The New York Times, "Why Trump Suddenly Declared Victory Over the Houthi Militia":

When he approved a campaign to reopen shipping in the Red Sea by bombing the Houthi militant group into submission, President Trump wanted to see results within 30 days of the initial strikes two months ago.

By Day 31, Mr. Trump, ever leery of drawn-out military entanglements in the Middle East, demanded a progress report, according to administration officials.

But the results were not there. The United States had not even established air superiority over the Houthis. Instead, what was emerging after 30 days of a stepped-up campaign against the Yemeni group was another expensive but inconclusive American military engagement in the region.

[...] [Gen. Michael E. Kurilla, the head of Central Command] proposed an eight- to 10-month campaign in which Air Force and Navy warplanes would take out Houthi air defense systems. Then, he said, U.S. forces would mount targeted assassinations modeled on Israel's recent operation against Hezbollah, three U.S. officials said.........more.......