It all started on July 12 when Israel troops were ambushed on Lebanon's side of the border with Israel. http://www.atimes.com/atimes/Middle_East/HG15Ak02.html

"The detention of Hamas parliamentarians in the early hours of Thursday morning had been planned several weeks ago and received approval from Mazuz on Wednesday. " http://www.haaretz.com/hasen/spages/732528.html