Argument: Israeli blockade, despite Hamas compliance, unraveled ceasefire
Rashid Khalidi. "What You Don’t Know About Gaza". New York Times. January 7, 2009 - Lifting the blockade, along with a cessation of rocket fire, was one of the key terms of the June cease-fire between Israel and Hamas. This accord led to a reduction in rockets fired from Gaza from hundreds in May and June to a total of less than 20 in the subsequent four months (according to Israeli government figures). [nevertheless, the blockade continued]
The New York Times published an article on December 19th, 2008, saying "Hamas imposed its will and even imprisoned some of those who were firing rockets. Israeli and United Nations figures show that while more than 300 rockets were fired into Israel in May, 10 to 20 were fired in July, depending on who was counting and whether mortar rounds were included. In August, 10 to 30 were fired, and in September, 5 to 10. [...] But the goods shipments, while up some 25 to 30 percent and including a mix of more items, never began to approach what Hamas thought it was going to get: a return to the 500 to 600 truckloads delivered daily before the closing, including appliances, construction materials and other goods essential for life beyond mere survival. Instead, the number of trucks increased to around 90 from around 70."