The TUC today condemned the ongoing blockade of Gaza that violates international law and affects 1.6 million people, half of whom are children.
Congress acknowledged that Israel's blockade of the region is now in its sixth year.
Fifty international charities and United Nations Agencies called for an immediate end to the blockade in June.
Congress reaffirmed its support for an inclusive peace process in the region and efforts to resume all-party negotiations.
CWU general secretary Billy Hayes said: "The Palestinian people living in the Gaza strip have been subject to assault on both land, sea and air.
"The impact of the siege has been devastating. Gaza will be without drinking water by 2016."
He noted that 70 per cent of Gaza's population are refugees and said the siege remains despite no shortage of formal support for the lifting of the Gaza blockade.
If you appreciated this article then please consider donating to the Morning Star's Fighting Fund to ensure we can keep developing your paper.
Donate to the Fighting Fund here
George Osborne's advice from the International Monetary Fund is like the curate's egg - good in parts.
Attacks such as yesterday's horrific murder in Woolwich didn't happen before the 'war on terror.' It's time we recognised the consequences of the conflicts we've unleashed
Why the US Department of Justice and the Serious Fraud Office are investigating the bank's deals in the Middle East