In Paris, on 5 April, at a meeting not of the SWC, Churchill pressed for Operation Royal Marine, but, fearing German reprisals, the French refused to countenance any mining of the Rhine. Churchill, therefore, decided that Britain alone would undertake the mining off Narvik; this action (Operation Wilfred) was planned for 8 April. However, in the meantime, the Germans had launched Operation Weserübung, the invasion of Norway and Denmark. Paul Reynaud, Édouard Daladier and Admiral Darlan flew to London for an emergency meeting of the SWC on 9 April. Here, it was resolved that an Anglo-French task force would be sent to Norway, but the operation (Plan R 4) was a failure. Not only did it prove impossible to stop the export of iron ore from Scandinavia to Germany but also the troops had to be evacuated, in what was known as Operation Alphabet.