The cooperation has been consolidated by unexpected actions of goodwill from both nations. In the summer 2010 Bulgaria dispatched 90 firefighters to Israel to join the efforts to put out a massive wild-fire that raged outside of Haifa. In the summer of 2012, Israel sent two 'Air Tractor' planes to Bulgaria to help that nation fight a wild-fire in the Vitosha Mountains near Sofia further signifying notions of repayment and as well as the strengthening of relations between the two countries. On 7 July 2011, Bulgarian Prime Minister Boiko Borissov and Israeli Prime Minister Benjamin Netanyahu signed a declaration pledging closer cooperation between the two countries and the governments between the two countries would result in a wide range of areas that include foreign affairs, national security and emergency preparedness, tourism, energy, and agriculture. Israel also took note of Bulgaria's prompt on international cooperation between the two countries to preserve memory, learning, and research on the Holocaust, combating xenophobia and antisemitism.