European Union – Foreign policy advisor Javier Solana spoke at a news conference in Slovenia, saying, "We understand the concerns of Turkey...but we think this action is not the best response. The territorial integrity of Iraq is for us very important." The European Commission said through a spokeswoman that "The European Union understands Turkey's need to protect its population from terrorism and it also says that Turkey should refrain from taking any disproportionate military action and respect human rights and the rule of law."
United Nations – Secretary General Ban Ki-moon released a statement asking for "utmost restraint" and respect of international borders on the part of Turkey and the immediate end of "incursions by PKK elements" into Turkey.
National governments
Australia – Foreign Affairs Minister Stephen Smith called on Turkey to respect Iraq's sovereignty and withdraw as soon as possible.
Germany – The Foreign Office urged Turkey not to escalate regional tensions.
Iraq – The Iraqi government protested to the Turkish chargé d'affaires in Baghdad. An Iraqi government spokesman said, "Our position is Turkey should respect the sovereignty of Iraq and avoid any military action which would threaten security and stability." On February 26 Iraq increased its criticism, saying the "unilateral military action was unacceptable and it threatened the good relations between the two neighbouring countries."
Russia - The Russian Foreign Ministry expressed the hope that a political solution respecting Iraqi sovereignty and regional security could be found, though it also acknowledged the importance of not allowing "the territory of any state to be used as a staging ground for terrorist activities against their neighbours."
United Kingdom – The Foreign Office stated, "We would urge Turkey to withdraw from Iraqi territory as early as possible and take the greatest possible care to avoid causing harm to the civilian population." On February 23 Turkish Foreign Minister Ali Babacan called British Foreign Minister David Miliband to update him on the operation's progress and exchange views.
United States – In the months leading up to the incursion the US had repeatedly expressed concerns that large-scale military action in Northern Iraq had the potential to destabilize the region, although it supported Turkey's right to defend itself against insurgents.
It was seen as a "bitter defeat for American diplomacy" when Turkey launched the operation in defiance of this lobbying effort,[57] and although the US publicly expressed its belief that Turkey had the right to defend itself against insurgents[58] they maintained consistent pressure on Turkey to limit the length and scale of the operation throughout.[38][59] On February 24, for example, U.S. Defense Secretary Robert Gates said "I would hope that it would be short, that it would be precise and avoid the loss of innocent life and that they leave as quickly as they can accomplish the mission."
Regional governments
The Kurdistan Regional Government condemned the Turkish operation and called for an immediate withdrawal of troops. The KRG suggested immediate four-way talks between Turkey, the U.S., the Iraqi government, and the regional government in Northern Iraq.
President of the regional government, Massoud Barzani, though stating the Kurdish government is not part of the Turkish-PKK conflict warned Turkey about inflicting civilian casualties saying, "if the Turkish military targets any Kurdish civilian citizens or any civilian structures then we will order a large-scale resistance", and, "if the clashes harmed any of the Kurdish citizens or further reached Kurdish inhabited areas, Kurds are instructed and prepared to counter attack".On February 28 the Kurdish prime minister said that the Turkish offensive may be aimed at the Kurdistan region of Iraq, and not strictly the PKK.