MARIB, Yemen 

At least one soldier was killed and three others wounded in an airstrike on a government-held military camp in Yemen’s Marib city, military sources said Wednesday.

A ballistic missile hit the camp, according to the government military sources.

The incident follows an airstrike on Jan. 19 by Iranian-backed Houthi rebels on a government military camp in which at least 87 people were killed.

Yemen has been beset by violence and chaos since 2014, when Houthi rebels overran much of the country, including the capital Sanaa.

The crisis escalated in 2015 when a Saudi-led military coalition launched a devastating

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