He was Romania's permanent representative to the EU Council in 2001-2006 and a long-time political adviser at the country's Foreign Ministry.
The diplomat highlighted Bucharest's efforts towards rearmament in the face of Russia's aggression against Ukraine and the prospects for rapprochement within NATO.
"At this moment, we see the need for solidarity and cohesion both in the North Atlantic Alliance and in the European Union," Mageru insisted.
"We very much appreciate the presence of our allies on Romanian soil. We are doing our utmost to strengthen our national capabilities. We increased our military budget first to 2% and then to 2.5%," he noted.
In view of the upcoming summit of the military bloc, the expert said:
"We look forward to the NATO summit in Vilnius and stronger security guarantees for Ukraine, our close neighbour. I think we also have the longest land border with the Ukrainian state among NATO members. We are very happy that Finland has joined the Alliance, because in this way we complete the eastern flank from the Arctic to the Black Sea and reach the Aegean Sea.
Regarding the security sector in the Black Sea region, Mageru said that the role of bilateral and trilateral cooperation between Sofia, Bucharest and Ankara is decisive.