Wisconsin Governor Scott Walker was one of four Republican presidential hopefuls to visit New Hampshire this weekend, where he spoke candidly of a need to send troops to fight the Islamic State group in the Middle East.

Walker told a group of Republican activists at Concord High School, "We need a commander in chief in this country who stands up once and for all and says our biggest threat is radical Islamic terrorism and we will do whatever it takes to weed that out anywhere in the world," reported the Journal Sentinel.

"We need a president who will do whatever it takes, whatever it takes," Walker continued. "Who understands we have an ally in Israel and we should start acting like it. Who understands that radical Islamic terrorism is like a virus and if you don't take it out entirely, it's like a virus in your computer that will keep coming back."

"And I don't know about all of you, but I'd rather take the fight to them than wait til it comes to us on American soil."

While there are no official Republican candidates in the 2016 race, Walker remains among the top tier of likely contenders, and he continues to hire staff and court voters and donors across the country.

He also revealed in New Hampshire that his 19- and 20-year-old sons plan to skip a semester of college this fall to help him with his campaign.

"They twisted our arms to figure out a way to maybe take part of a semester off next year, next fall, to come to New Hampshire, to come around the country and talk to young people like themselves," Walker said, reported The Associated Press.

Following his 20-minute speech, Walker spoke to reporters about accusations of flip-flopping on issues, admitting the he switched his position on immigration reform but making a point to distinguish between flip-flopping and listening to what the voters want.

"[Illegal immigration] is one where we listened to people all across the country, particularly border governors. We saw how the president messed that up, and that's an issue where I think people want leaders who are willing to listen to people," Walker said, reported Time.

"I think the key is if you've listened to people and you have a valid argument for why you've done it -we've laid out exactly what we've done - but I think people want strong leaders and they want leaders who'll listen to the people."