 However, he later abandoned all of these ideas after the Spanish navy responded by a naval attack on the Ottoman ships trying to explore North America.Murad was influenced by viziers Lala Kara Mustafa Pasha and Sinan Pasha and disregarded the opposing counsel of Grand Vizier Sokollu.Murad also fought the Safavids which would drag on for 12 years, ending with the Treaty of Constantinople (1590), which resulted in temporary significant territorial gains for the Ottomans.