Complex sentence: Mikati succeeded Saad Hariri, whose government was brought down by the resignation of ten of the alliance's ministers and one presidential appointee on 12 January 2011, resulting from the collapse of the Saudi-Syrian initiative to reach a compromise on the Special Tribunal for Lebanon.
Split into simpler sentences: Mikati succeeded Saad Hariri, whose government was brought down by the resignation of 10 of the alliance's ministers, and one presidential appointee, on 12 January 2011. It was a result of the collapse of the Saudi-Syrian initiative to reach a compromise on the issue of the Special Tribunal for Lebanon.