The government denied the allegation that it was suppressing a report on Russia's alleged interference in British democracy until after parliamentary elections.
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Secretary of State Christopher Pincher said the Prime Minister will publish the report "in due course".
He added, "We can not accelerate this process to jeopardize our national security."
Parliament's Intelligence and Security Committee report was finalized in March and sent to number 10 on 17 October.
It examines Russian activities – including allegations of espionage, subversion and electoral interference – and includes evidence from British intelligence agencies such as GCHQ, MI5 and MI6 regarding covert Russian attempts to influence the outcome of the EU referendum in 2016 and the 2017 parliamentary elections
The approval for its publication still needs to be granted – and will be issued after election day.
Dominic Grieve, chairman of Parliament's Intelligence and Security Committee, said there was no legitimate reason for delaying the report and voters had the right to see it before they went to the polls.
During an urgent question in the House of Commons, the former Attorney General stated that there was a "long-standing agreement" whereby the Prime Minister would endeavor to respond to the committee's reports 10 days later.
Mr Grieve also said that the intelligence services had stated that publication of the report would not interfere with the performance of their duties.  59007] But Foreign Minister Pincher regretted that the processing time for the report was "not unusual" – citing examples of reports that had taken six weeks to get Downing Street's approval.
"Obviously Politically Motivated"
Shadow Foreign Secretary Emily Thornberry said Downing Street's decision not to release the report for publication before the parliamentary elections was "clearly politically motivated".
Affront to our democracy, "she told Commons.
Ms. Thornberry said, No. 10 recognized that the report was" other questions about the ties between Russia and Brexit and with the current leadership of the Tory party
She continued, "Publish this report and let us see for yourself, otherwise there is only one question: what do you have to hide? "
Mr. Pincher denied the decision not to p The publication of the pre-election report was politically motivated.
The BBC Newsnight's diplomatic editor, Mark Urban, tweeted that the Government's assertion that the report must be withheld because it is "unusual" to say the least.
"It is normal for the government [sic] to react after the release," he said.
"Suspicion of Motives"
Previously, Lord Evans, MI5 Director-General until 2013, had told Today's ministers that this was to explain why they were unwilling to publish the report.
"Basically, I think it should be published," he said.
"One reason for setting up an intelligence and security committee is that public interest issues can be well thought out and the public can be informed by publishing the reports once they have gone through the security process."
He "If the government has a reason why this should not be published before the election, then I think they should make it very clear what that reason is."
Lord Anderson, the watchdog of Terrorism, said on Monday, another delay would arouse "suspicion" on the government's pre-election motives.