Germany, Britain and France are scrambling to keep talks with Iran over its 2015 nuclear agreement alive despite Tehran having all but torn up the deal after the United States killed its top military commander.

In its first formal response to the killing of Qassem Soleimani in a drone strike at Baghdad International Airport, Iran said Sunday it would abandon limits on its enrichment of uranium, further breaching a central component of the deal it struck with six major powers.

Since Iran did not say how far it would take enrichment while re-affirming cooperation with U.N. inspectors monitoring its nuclear activity, European Union officials found positive elements in the statement and the potential for de-escalation.