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Saudi-led airstrikes shake Yemen's capital as Shiite rebels, allies push south toward Aden

  • Yemenis gather during a rally against Saudi-led airstrikes on Shiite rebels, known as Houthis, in Sanaa, Yemen, Monday, March 30, 2015. Arabic writing on a banner reads, "Do you agree on the attack? Israel also agrees."(AP Photo/Hani Mohammed)

    Yemenis gather during a rally against Saudi-led airstrikes on Shiite rebels, known as Houthis, in Sanaa, Yemen, Monday, March 30, 2015. Arabic writing on a banner reads, "Do you agree on the attack? Israel also agrees."(AP Photo/Hani Mohammed)  (The Associated Press)

  • Yemenis gather during a protest against Saudi-led airstrikes on Shiite rebels, known as Houthis, in Sanaa, Yemen, Monday, March 30, 2015. (AP Photo/Hani Mohammed)

    Yemenis gather during a protest against Saudi-led airstrikes on Shiite rebels, known as Houthis, in Sanaa, Yemen, Monday, March 30, 2015. (AP Photo/Hani Mohammed)  (The Associated Press)

  • Yemenis chant slogans during a protest against Saudi-led airstrikes on Shiite rebels, known as Houthis, in Sanaa, Yemen, Monday, March 30, 2015. (AP Photo/Hani Mohammed)

    Yemenis chant slogans during a protest against Saudi-led airstrikes on Shiite rebels, known as Houthis, in Sanaa, Yemen, Monday, March 30, 2015. (AP Photo/Hani Mohammed)  (The Associated Press)

A series of airstrikes by a Saudi-led coalition have shaken Yemen's capital into the early morning amid the group's campaign against Shiite rebels and their allies.

The strikes Monday in Sanaa come as the rebels, also known as Houthis, pushed south toward the port city of Aden, Yemen's economic hub and the latest seat of power for those allied with embattled President Abed Rabbo Mansour Hadi. Hadi fled Yemen last week, sparking the airstrike campaign.

Monday marked the fifth day of the airstrike campaign against the Houthis and their allies, largely forces loyal to deposed leader Ali Abdullah Saleh. The strikes have targeted fighters, jets, air defense systems and Scud missile launch pads that could threaten Saudi Arabia.