An explosive-laden drone at Leipzig airport has heightened fears over a sabotage campaign that the EU. The EU's foreign policy chief Kaja Kallas said the attempted attack had "all the hallmarks of state-sponsored terrorism." She said the EU was summoning a Russian envoy, with France announcing a similar step. Key points and original sources are listed below.

• An explosive-laden drone at Leipzig airport has heightened fears over a sabotage campaign that the EU.S1

• The EU's foreign policy chief Kaja Kallas said the attempted attack had "all the hallmarks of state-sponsored terrorism." She said the EU was summoning a Russian envoy, with France announcing a similar step.S2