Tranmæl and other critics saw the non-intervention policy of the government as giving equal standing to both the elected government of Spain and the rebels. Koht went to great lengths to avoid any direct Norwegian involvement in the conflict, especially trying to block Norwegians from travelling to Spain to join the International Brigades. On 19 September 1936, Koht attempted to have the League of Nations impose a ceasefire in Spain, to be followed by a popular referendum on the country's constitution. Koht's proposal received little support and failed. For Koht personally the civil war in Spain came close to ending his cabinet career on several occasions. On 9 April 1937, following a series of incidents where Francoist warships intercepted Norwegian vessels sailing on Spanish ports and confiscated both cargoes and ships, and Norwegian protests failing to gain results, Koht made a formal proposal to dispatch the Norwegian minelayer Olav Tryggvason to Spain to protect Norwegian shipping. After the proposal met opposition in parliament and was set to fail, Koht offered to resign. Prime Minister Nygaardsvold refused to accept Koht's resignation, stating that he "would rather be shot than lose Koht". The case came close to causing the whole cabinet's fall in parliament, before it was agreed that it would be dropped. When Koht in 1938 attempted to establish a trade agreement with Franco, he was blocked by his own party and the Norwegian Confederation of Trade Unions. Again requesting to be allowed to resign, Koht stayed after months of debating ended with the party giving the cabinet free rein to do what it saw as best with regards to trade with Franco. By October 1938 Koht had negotiated a trade agreement with Franco. The formal Norwegian recognition of the Franco government as the representative of Spain followed on 31 March 1939, three days after the fall of Madrid to the nationalist forces. Second World War Pre-war phase With the outbreak of the Second World War in September 1939, the Norwegian government declared the country neutral in the conflict. Both warring sides subsequently stated that they would respect Norway's neutrality, provided that she protect her neutrality against trespasses by the other side. Koht was clear from early on that Norway should remain neutral, but also that in the event of her being forced to enter the war it was critical that it was on the side of the British. Over the