inciting upheavals behind the Ottoman lines, and were cooperating with Russian forces. This order resulted in the arrest on the night of 24–25 April 1915 of 235 to 270 Armenian community leaders in Constantinople, including Dashnak and Hunchak politicians, clergymen, physicians, authors, journalists, lawyers, and teachers, the majority of whom were eventually murdered, including his colleagues Zohrab and Serengülian. Although the mass killings of Armenian civilians had begun in Van several weeks earlier, these mass arrests in Constantinople are considered by many commentators to be the start of the Armenian genocide. He then issued the order for the Tehcir Law of 1 June 1915 to 8 February 1916 that allowed for the mass deportation of Armenians, a principal means of carrying out what is now recognized as a genocide against Armenians. The deportees did not receive any humanitarian assistance and there is no evidence that the Ottoman government provided the extensive facilities and supplies that would have been necessary to sustain the life of hundreds of thousands of Armenian deportees during their forced march to the Syrian Desert or after. Meanwhile, the deportees were subject to periodic rape and massacre. Talaat, who was a telegraph operator from a young age, had installed a telegraph machine in his own home and sent "sensitive" telegrams during the course of the deportations. This was confirmed by his wife Hayriye, who stated that she often saw him using it to give direct orders to what she believed were provincial governors. Numerous diplomats and notable figures confronted Talaat Pasha over the deportations and news of massacres. He had several conversations with the United States ambassador, Henry Morgenthau, Sr. On 2 August 1915 Talaat told him that "that our Armenian policy is absolutely fixed and that nothing can change it. We will not have the Armenians anywhere in Anatolia. They can live in the desert but nowhere else." In another exchange, he demanded from Morgenthau the list of the holders of American insurance policies belonging to Armenians in an effort to appropriate the funds to the state. Morgenthau refused. Talaat told him in a later conversation that: Talaat believed Armenian deportation avenged the Muslim expulsions of the Balkan Wars, and resettled Muhacir in abandoned Armenian property. The Assyrian Christian community was also targeted by the Unionist government in what is now known as the Seyfo. Talaat ordered the governor of Van to remove the Assyrian population