"As they push for sanctions against Rwanda, (Congo's president), seeing that Rwanda is being targeted, will refuse to participate in any negotiations," James Kabarebe, a Rwandan state minister for foreign affairs, said in a speech on Tuesday.

Rwanda has said international sanctions will reduce the likelihood of peace with M23 rebels in the Democratic Republic of the Congo (DRC), after the United Kingdom said it would pause some bilateral aid and impose other diplomatic sanctions on Kigali.

The UK says it will also suspend future defense training assistance and demands that Kigali withdraw its troops from Congo.

The UK has paused some aid to Rwanda and imposed diplomatic sanctions over its alleged support of the M23 group in Congo's conflict. While Rwanda denies backing the group, the UK demands a withdrawal of Rwandan troops from Congo and encourages dialogue as a political solution.

Causing surprise across the bloc, Luxembourg has blocked the adoption of sanctions against Kigali. European ministers have suspended EU defence consultations with Rwanda.View on euronews

U.K. authorities are punishing Rwanda over its support of the rebels who now control two major cities in eastern Congo

The UK's decision to suspend some aid to Rwanda is "punitive", authorities in the East African country have said. In a statement, the UK said it was against Rwanda's support for the M23, a rebel group that has captured swathes of eastern Democratic Republic of Congo in a deadly uprising.