Hanoi, April 15 -- Deputy Prime Minister Bui Thanh Son on April 15 held a phone call with Kaja Kallas, Vice President of the European Commission (EC) and High Representative for Foreign Affairs and Security Policy of the European Union (EU), who expressed her hope that the two sides will soon upgrade their ties to a comprehensive strategic partnership. During the call, both sides expressed satisfaction with the positive developments in Vietnam-EU cooperation over the past 35 years since the establishment of diplomatic relations, particularly in the fields of politics-diplomacy and trade-investment, which have laid a solid foundation for elevating the partnership to a new level. They shared the view that the EU-Vietnam Free Trade Agreement...