Gaza blockades began long before your reading about it started.The Al Aqsa Intifada which broke out in September 2001 led to an Israeli blockade of Gaza and closure of Gaza International Airport. Economic effects were immense, some $3.5million. After October,all movement across the Green Line dividing West Bank from Gaza was halted. Complete closer installed in November 2001. Economic and humanitarian issues caused great concern in UNCTAD by 2003. From 2000 to 2006 consequence of Israeli military activity in Gaza was estimated loss of $42 million in Gazan agricultural productivity. The IDF left Gaza on 1 September 2005, but Israel maintained control of all entry and egress points and all water and air space. Israel imposed a total blockade in 2007, when Hamas won control in Hama. When Hamas won the elections, an Israeli deputy minister announced that the Gazans were, "going on a diet." They did ... and thus rockets.
EU's Mogherini in Tehran to talk nuclear deal, regional issues (Reuters)
from the article: Response / Henry Siegman on Burston and 'Israel's pathology'