As the office of President is shaped to a large degree by the person holding the position, the briefing also indicates how Costa's approach differs from that of previous Presidents.
President António Costa travelled to Berlin and delivered a speech at the High-level event of the Friedrich Ebert Stiftung marking their 100th anniversary.
Kremlin says Russia is waiting for a briefing from US on the proposal that calls for a halt to all the fighting.
Volodymyr Zelenskyy said Ukraine has accepted a US proposal for a 30-day ceasefire with Russia after the talks in Jeddah - something which has been welcomed by European leaders.