The existance of a blockade is a simple fact

however....

"Israel has never published a list of banned items, saying it approves requests on a case-by-case basis.

Items allowed have changed over time, which has left humanitarian organisations and commercial importers constantly attempting to guess what will be approved.
The court case has been brought by the Israeli human rights group, Gisha.
The group has been trying, for more than a year, using freedom of information legislation, to squeeze information from the state about what exactly is allowed for import to Gaza, and why.

In January, Gisha, took the Israeli authorities to court, to try to force them to provide the information.
Gisha's director, Sari Bashi, says she is no security expert, "but preventing children from receiving toys, preventing manufacturers from getting raw materials - I don't see how that's responsive to Israeli security needs."

And she says that some of the prohibitions appear to be absurdly arbitrary: "I certainly don't understand why cinnamon is permitted, but coriander is forbidden. Is there something more dangerous about coriander?
Is coriander more critical to Gaza's economy than cinnamon? This is a policy that appears to make no sense."
She argues that if there is a logic behind such decisions, the military should reveal what it is


GOODS ALLOWED INTO GAZA - beginning of May
Canned meat and tuna, but not canned fruit
Mineral water, but not fruit juice
Sesame paste (tahini) but not jam
Tea and coffee but not chocolate

The lack of clarity causes immense frustration not just among Gazans, but among aid groups, diplomats, and the United Nations - which has described Israel's blockade as "collective punishment"

The problem, they say, is not just the shortages themselves, but the unpredictability and changing nature of what is permitted for import.
Israeli officials have said, in the past, that they are concerned that building materials in particular could be misappropriated by Hamas for military ends.

But some Israeli commentators - even those who advocate a tough stance against Hamas - say that the strategy behind the much wider blockade is ill-defined, and harmful to Israel's international standing.

The BBC has received information from reliable sources that there are currently 81 items that are approved for import - from kidney beans to tinned meat - and as of March, shoes.

Among the large range of goods currently forbidden are jam, chocolate, wood for furniture, fruit juice, textiles, and plastic toys.

A 13-page submission by the Israeli authorities to the Tel Aviv District Court raises more question s than it answers.

It does set the context for the blockade: in what Israel considers to be its existential conflict with Hamas.
But it will not satisfy those calling for Israel to be more open about one of its most contentious policies."

From a BBC report May 3rd