Article 2 Should one of the Contracting Parties, despite its peaceful attitude, be attacked by one or more third Powers, the other Contracting Party shall observe neutrality for the whole of the duration of the conflict. Article 3 If on the occasion of a conflict of the nature mentioned in Article 2, or at a time when neither of the Contracting Parties is engaged in warlike operations, a coalition is formed between third Powers with a view to the economic or financial boycott of either of the Contracting Parties, the other Contracting Party undertakes not to adhere to such coalition. Article 4 The present Treaty shall be ratified and the instruments of ratification shall be exchanged at Berlin.