US Secretary of State John Kerry called Friday on Shiite Huthi rebels in Yemen and those who have "influence over them" to come to the negotiating table and end the unrest in the Gulf nation.

"This has to be a two-way street," Kerry told reporters, saying Saudi Arabia was moving to a humanitarian phase of its Yemen campaign and "we need the Huthi and we need those that can influence them to make sure that they are prepared to try to move... to the negotiating table."