European Commission President Ursula von der Leyen revived the issue of Article 42.7 of the EU Treaty, the mutual assistance clause, in remarks delivered to the CDU/CSU parliamentary group in the German Bundestag on Monday, noting that "it is not a question of 'whether'. The question is how we shape the 'how' and 'by what means'", days after the informal European Council held in Cyprus on 23-24 April.