Shadow Foreign Secretary Douglas Alexander has said the British public needs reassurance about the number of UK arms being exported to Israel.
The minister said the government must urgently publish a review into its existing UK export licenses to Israel.
In a statement, he said: “The Government must provide assurances that the Consolidated Criteria on arms control is being upheld, which prevents the export of military and dual use equipment which could be used for internal repression, the abuse of human rights or to provoke or prolong armed conflicts.”
Mr Alexander added it was a "source of shame" that the Prime Minister has so far failed to condemn the scale of Palestinian suffering as a result of the Israeli offensive.
Shadow foreign secretary Douglas Alexander has said that after Russia signed the Geneva accord earlier in the month, they have "since failed to act on its commitments within the agreement, and has taken no public steps to help de-escalate the situation in eastern Ukraine".
He said: "Given Russia's continued actions, the G7 is right to now prepare broader sectoral measures in order to increase the economic and financial cost to Russia of its actions to support the destabilisation of eastern Ukraine.
"The priority now must be avoiding an escalation in the region and securing conditions in which upcoming Presidential elections in Ukraine can take place without the risk of further violence."
The UK Independence Party poses a "mortal threat" to the Conservatives' chances of winning the next election, the shadow foreign secretary has told ITV's The Agenda.
Douglas Alexander told host Tom Bradby that he took the threat from Ukip "very seriously" but added: "I think you defeat Ukip is not [by] what David Cameron has done: first of all ignore them, then insult them, then imitate them."
But he admitted he was "certainly not complacent" and that Labour "have got a lot of work to do."
Mr Alexander added: "If you are a party that aspires to be the government you can't just offer anger, you've got to offer answers - so in that sense I don't want to be a replica of Nigel Farage, I want to be a remedy. That means offering different policies that give people confidence."
Tom is also joined by the broadcaster Mariella Frostrup, the Countdown presenter Nick Hewer and the Spectator's Isabel Hardman.
The Agenda with Tom Bradby will be broadcast on ITV at 10.35pm.
Get involved in the debate on Twitter during the show by using the hashtag #theagenda
Shadow foreign secretary Douglas Alexander has said Prime Minister David Cameron must "urgently consider reversing his decision" to attend the Commonwealth Heads of Government summit in Sri Lanka this week.
"For months Labour has urged the Government to do more to raise Britain's concern over human rights in Sri Lanka in the run up to the summit," Mr Alexander said.
"If the Prime Minister now chose to reverse his decision to attend the summit - even at this late stage - he would have Labour's full support."
The political fallout from last week's Syria vote has continued with a Cabinet minister saying the results would be a matter for Ed Miliband's conscience and the shadow foreign secretary admitting he was not comfortable with the position Labour now finds itself in.
Speaking on BBC Breakfast Shadow foreign secretary Douglas Alexander said:
The right response is not simply to say something must be done, however loudly. It is to both ask and answer the question 'What steps can be taken to make a horrendous situation better?'
Now, as the Labour Party, we have never in principle ruled out the use of force in Syria. But we haven't yet heard from the Government what its strategic objective would be for any military action.
Would it be to degrade and diminish the capability of Assad to use chemical weapons? Would it be an attempt to try and change the course of a highly complex, intractable civil war?
We simply haven't had those questions answered.
And that's why I do think the Prime Minister should bring Parliament back so that they can offer their case both to politicians and to the people before any decision is taken to commit British forces into combat.