The Financial Times reports that major European military powers are in talks to revamp the security framework on the continent, as they are ready to undertake more responsibilities in NATO as the U.S. appears to be disengaging from the military alliance, citing four European officials.

Citing a new report, the FT says the UK, Germany, France, and Scandinavian countries are engaging in unofficial discussions to gradually transfer power from the U.S. with NATO in the next five to ten years.

According to the Financial Times, the discussions are an effort to prevent potential chaos in the event that the United States unilaterally decides to withdraw from the transatlantic security alliance that has protected Europe for the past 80 years. European leaders reportedly aim to present their plan to the U.S. ahead of NATO’s annual summit in The Hague this June.

Currently, the United States contributes 15.8% of NATO’s annual budget of $3.5 billion while also deploying between 80,000 and 100,000 troops across Europe, making its role indispensable for the continent’s security.

Germany, France, and the United Kingdom have already announced plans to increase their defense spending and military investments. According to the Financial Times, citing government officials, it is estimated that it will take five to ten years of increased expenditure for European capabilities to reach a level where they could take over most of the responsibilities currently shouldered by the U.S.

“The only option we have is to increase spending—redistributing the burden and shifting away from reliance on the U.S.,” one official quoted by the FT stated. “We are beginning these discussions, but the sheer scale of the task is overwhelming for many.”

Since Trump won the election last November and returned to power earlier this year, European countries have been striving to increase defense spending and reassess their military posture amid Russia’s growing assertiveness.

According to Bloomberg, the five key areas of focus in the coming period include air defense systems, long-range fire capabilities, logistics, communication and information systems, and ground maneuver capabilities.