The conflict has opened a second front in the Middle East after the United States and Israel attacked Iran, adding to global uncertainty and turmoil in energy markets.

© AFPTV, via Agence France-Presse – Getty Images

The conflict has opened a second front in the Middle East after the United States and Israel attacked Iran, adding to global uncertainty and turmoil in energy markets.

© AFPTV, via Agence France-Presse – Getty Images

The president vacillated but decided on Sunday not to join Saudi Arabia, for now, in joint strikes against the Houthis in Yemen. But he also needs the kingdom’s cooperation in his war against Iran.

© Kenny Holston/The New York Times