Security around EU countries' infrastructure was on the agenda during the North Sea Summit, which was attended by EU leaders such as Macron and Scholz.
"We are following the situation closely. Our critical infrastructure is under threat. We know this after the sabotage of Nordstream's gas pipelines last year. This is also the reason why we in the EU have adapted cooperation between member states, says European Commission President Ursula von der Leyen to DR.
EU and NATO working together
Of 50 suspicious vessels, 27 have moved in Swedish waters, according to SVT's investigation, often under the guise of being fishing trawlers or cargo vessels. The revelation has provoked reactions, Prime Minister Ulf Kristersson has called it "a very risky situation" in Sweden's immediate vicinity.
The EU and NATO are cooperating on this issue.
"We have created a joint task force to focus on all forms of threats to our infrastructure, including cyber threats and key sectors such as energy. Experts in the EU and NATO are working on a program on coordinated resistance that will be presented at the NATO meeting in July, von der Leyen told DR.