A Democratic Republic of Congo fighter jet entered Rwandan airspace, both governments said, in what Rwanda called a "provocation", although Congo said it was a mistake. No military action was taken and the warplane returned to Congo. The incident comes at a time of particularly high tensions between the neighbours, as Congo blames Rwanda for supporting a rebel group fighting in its east. On Monday morning, a Sukhoi-25 fighter jet from Congo violated Rwandan airspace and briefly touched down at Rubavu Airport in Rwanda's Western Province, the Rwandan government said in a statement. "Rwandan authorities have protested this provocation to…