Pakistan's defense minister says a Saudi-led coalition targeting Shiite rebels in Yemen wants it to contribute ground troops.

The comments Monday by Defense Minister Khawaja Muhammad Asif come as Pakistan's parliament debates whether to contribute militarily to the campaign against the rebels, known as Houthis. Pakistan has offered its verbal support for the mission.

Days of airstrikes have yet to dislodge the Houthis from territory they hold across Yemen, the Arab world's poorest country. That's led to speculation that there could be a ground operation launched in Yemen.

Asif says Saudi Arabia also asked for aircraft and naval ships for the campaign.

The Saudi-led campaign entered its 12th day Monday, targeting rebels who took over the capital, Sanaa, in September and eventually forced President Abed Rabbo Mansour Hadi to flee.