In his remarks, set to take place at the Virginia Military Institute in Lexington, Romney will address the ongoing unrest in Syria, calling for the U.S. to "work with our partners" to help the opposition and "ensure they obtain the arms they need."
Romney will also argue that last month's consulate attack in Benghazi, Libya, "should not be seen as random acts."
Instead he will say the violence "was likely the work of the same forces that attacked our homeland on September 11th, 2001." The Benghazi attack left the U.S. ambassador and three other Americans dead.
Last month, Romney sharply criticized the Obama administration's handling of the situation and its immediate aftermath.
Some political observers, however, hounded Romney for speaking too critically and too soon about the violence, before the facts were known.
The Republican candidate will also address issues concerning Afghanistan, Egypt and the Israeli-Palestinian conflict.
Romney will focus on Iran in particular, warning that he will "put the leaders of Iran on notice that the United States and our friends and allies will prevent them from acquiring nuclear weapons capability."
In the third and final presidential debate on October 22, Romney will face off against President Barack Obama on matters of foreign policy and national security.
Read the excerpts below:
"The Mantle of Leadership"
Foreign Policy Address
October 8, 2012
Virginia Military Institute-- Lexington, VA
Of all the leaders who have called Lexington, Virginia their home, none is more distinguished than George Marshall -- the Chief of Staff of the Army who became Secretary of State and Secretary of Defense, who helped to vanquish fascism and then plan Europes rescue from despair. His commitment to peace was born of his direct knowledge of the awful costs and consequences of war.
General Marshall once said, The only way human beings can win a war is to prevent it. Those words were true in his time -- and they still echo in ours.
*** The attacks on America last month should not be seen as random acts. They are expressions of a larger struggle that is playing out across the broader Middle East -- a region that is now in the midst of the most profound upheaval in a century. And the fault lines of this struggle can be seen clearly in Benghazi itself.
The attack on our Consulate in Benghazi on September 11th, 2012 was likely the work of the same forces that attacked our homeland on September 11th, 2001. This latest assault cannot be blamed on a reprehensible video insulting Islam, despite the Administrations attempts to convince us of that for so long. No, as the Administration has finally conceded, these attacks were the deliberate work of terrorists who use violence to impose their dark ideology on others, especially women and girls; who are fighting to control much of the Middle East today; and who seek to wage perpetual war on the West.