EU foreign policy chief Kaja Kallas has come out in support of her own foreign policy department in an internal email seen by Euronews, as discussions among key European capitals over how to reform the bloc's diplomatic service grow louder.

The European External Action Service (EEAS) and the role of the High Representative for Foreign Affairs and Security Policy are facing growing scrutiny as EU governments push to make the bloc's foreign policy more agile in an increasingly volatile global landscape.

Paris has been leading efforts to sketch out what an overhaul of the EU's diplomatic service could look like, circulating a discussion paper outlining several reform options. Some proposals would curtail the powers of the High Representative, currently held by Kallas, while another would expand her authority in key policy areas.

"The relationship between the EEAS, the Commission and member states has been discussed since the service was established. Given the unprecedented geopolitical challenges we face, it is only natural that these discussions attract renewed attention and take on greater intensity," Kallas wrote in the internal email seen by Euronews on Thursday.

The French-led paper outlines three possible scenarios.