THERESA May will offer to share British spies’ world leading expertise on tackling cyber attacks with EU allies in a bid to win a good Brexit deal tomorrow.
The PM will also again vow that Britain will continue to protect Europe’s borders against Russian aggression.
The double offer will come while at an EU summit in the Estonian capital of Tallinn.
In its margins, Mrs May will also hold talks with newly re-elected German leader Angela Merkel to discuss Brexit negotiaitons.
The powerful German chancellor’s re-engagement on the process is seen as significant by No10 and further raised hopes of a breakthrough in the talks’ stand off after the PM’s speech in Florence last week.
The Tory leader will also visit 800 British troops stationed close to the Baltic state’s border with Russia.
She will say: “There is no clearer demonstration of the UK’s unconditional commitment to Europe’s defence than the 800 British troops now in Tapa, leading a NATO battlegroup and standing shoulder to shoulder with their Estonian, French and soon their Danish counterparts too.
“From terrorism to cyber-crime, illegal migration to Russian aggression, the threats we face as Europeans are increasing in their scale and complexity.
“Now more than ever it is in all our interests to confront them together.”
A post-Brexit security treaty was also a major compromise offer made to the EU by Mrs May in Florence, in a bid to unlock a deal.
To show willing, the PM will also invite EU members’ top officials to London to work with the National Cyber Security Centre on a plan to stop hostile states from interfering in elections.
The PM will also hold a Brexit talk with Poland’s leader on Friday.