Saudi fighter jets bombed a residential building in the Yemeni province of Ta'izz early on Monday, and killed at least four civilians. Also on Monday, Saudi warplanes repeatedly pounded various areas in the Yemeni capital, Sana'a, as well as the province of Ma'rib. Meanwhile, the death toll from a Saturday night air raid on the province of Ibb rose to 15. At least 20 more were wounded in the attack. Saudi Arabia has been bombing Yemen in the last 138 days to bring its ally, fugitive president Mansour Hadi, back to power. The airstrikes have so far claimed the lives of more than 5,379 civilians, mostly women and children.