Sri Lanka's government and Tamil Tiger rebels agreed Friday to meet in coming weeks to review a cease-fire that has been threatened by a rash of killings, including the assassination of the foreign minister. The meetings will be the first formal sessions between the sides in more than two years. Peace negotiations remain stalled, and the prospects for reviving them as uncertain after the Aug. 12 assassination of Foreign Minister Lakshman Kadirgamar by suspected rebels. Norwegian Deputy Foreign Minister Vidar Helgesen said Friday the government and Liberation Tigers of Tamileelam had agreed to hold the talks in the coming weeks. The exact timing and venue were still being worked out.