Yemen state news agency says country will give military support to Saudi Arabian-led coalition . Saudi Arabia begins military operations in Egypt , ambassador says . Sources tells CNN that other Gulf nations will be a part of a coalition fighting the Houthi rebels .
Egypt state news agency says country will give military support to Saudi Arabian-led coalition . Saudi Arabia begins military operations in Yemen , ambassador says . Sources tells CNN that other Gulf nations will be a part of a coalition fighting the Houthi rebels .