"Although the UN(-Arab League Special) Envoy to Syria (Lakhdar Brahimi) has traveled to this country several times seeking a peaceful transition of power via consultation with other states and the Syrian government, the remarks made by the UN Secretary-General have caused (further) tension in the Syria crisis," Hossein Sobhaninia said Friday.
"Today, the United Nations and its Secretary-General are not fulfilling their duty to protect the independence and sovereignty of countries and with their hostile stance they are violating the UN Charter," he pointed out.
Sobhaninia added that Ban's comments would give militants and their supporters the green light to continue warmongering in Syria.
In a speech in Central Damascus on Sunday, President Assad called for a reconciliation conference with "those who have not betrayed Syria", to be followed by the formation of a new government and an amnesty.
"The first stage of a political solution would require that regional powers stop funding and arming (the opposition), an end to terrorist operations and controlling the borders," he said.
"We will not have dialogue with a puppet made by the West," he said.
Syria has been experiencing unrest since March 2011 with organized attacks by well-armed gangs against Syrian police forces and border guards being reported across the country.
The US and its western and regional allies have long sought to topple Assad and his ruling system. Media reports said that the Syrian rebels and terrorist groups have received significantly more and better weapons in recent weeks, a crime paid for by the Persian Gulf Arab states and coordinated by the United States.
The US daily, Washington Post, reported in May that the Syrian rebels and terrorist groups battling the President Bashar al-Assad's government have received significantly more and better weapons in recent weeks, a crime paid for by the Persian Gulf Arab states and coordinated by the United States.
The newspaper, quoting opposition activists and US and foreign officials, reported that Obama administration officials emphasized the administration has expanded contacts with opposition military forces to provide the Persian Gulf nations with assessments of rebel credibility and command-and-control infrastructure.
Opposition activists who several months ago said the rebels were running out of ammunition said in May that the flow of weapons - most bought on the black market in neighboring countries or from elements of the Syrian military in the past - has significantly increased after a decision by Saudi Arabia, Qatar and other Persian Gulf states to provide millions of dollars in funding each month.