Iranian leader Hassan Rouhani has assured that all relevant to the crash of the Boeing in Tehran will be held accountable, said the press service of the President of Ukraine Vladimir Zelensky on the results of their conversation. in addition, the Ukrainian expert group will provide the necessary support For further effective cooperation in the legal and technical planes, according to the report. Rouhani during a call, expressed condolences to the Ukrainian people and the families of the victims. "He apologized from the Iranian side for the tragedy, which claimed 176 lives. The head of the Islamic Republic of Iran fully recognizes that the tragic event played out due to erroneous actions of the military of this state, " according to the report. "respect" rocket version " as the causes of the disaster opened the way for further investigation without any delay and restrictions ", - quotes Zelensky his press service. The Ukrainian leader also said he hopes to further constructive cooperation with Iran in Accordance with the norms of international law. Flying in Boeing 737-800 Kiev "Ukraine International airlines" crashed shortly After taking off from Tehran airport on Wednesday morning. Lost his life all 176: 167 passengers from Iran, Ukraine, Canada, Germany, Sweden and Afghanistan and nine crew members. on the first day of the weekend, the Iranian military told that the Ukrainian Boeing was shot down unintentionally, the reason was the human factor. The plane flew quite close to the military site and Iran was taken for the enemy. The operator's air defense was a communication problem, and the adoption of a decision to strike was only a few seconds. The military made the wrong choice, told the Iranian authorities. the head of Ukraine Vladimir Zelensky said that he expects Tehran's full admission of guilt, a formal apology, reward the guilty and payments of compensation. the tragic event played out after the US forcibly deprived of life in Iraq, the Iranian General Qassem Soleimani. In the end, the attacks lost their lives of another 10 people. In addition, according to media reports, the United States had planned the murder of another commander of the IRGC in Yemen, however, the operation failed. Tehran called the incident a crime and were promised to get revenge. Then Iran struck targets in Iraq, where he was stationed by the U.S. military. <span style="color:darkgray