’We will not be intimidated’ says Obama in Estonia amid beheading of U.S. journalist

U.S. President Barack Obama has condemned the murder U.S. journalist Steven Sotloff at the hands of extremist group ISIS.

YouTube video emerged yesterday from etremist group ISIS showing the beheading of Sotloff. It's the second such video to emerge after former AFP journalist James Foley met a similar fate.

"We're appalled by the latest news from Iraq, we see ISIS as a serious threat to all of us and stand together with U.S on this issue," Estonia's President Toomas Hendrik Ilves told reporters in Wednesday.

U.S President Barack Obama has also condemned the killing. He said the long arm of justice would catch up with the journalists killers. 

He said: "The prayers of American people with Steven Sotloff. Steven was taken from us in a horrific act of violence. We cant begin to imagine agony every who loves Stephen feel, especially his mother, father and sister. Our country grieves with them. Steve's life stood in sharp contrast to those who murdered him brutally. It was Stephen who deeply loved the Islamic world.

"We will not be intimidated," Obama added.

Obama on ISIS: "We were very clear this was very serious threat not just to Iraq but to region. The air strikes we've conducted in support of protecting Americans have born fruit. The strategy we've laid out is moving effectively.

"This won't be a one week, one month, six month proposition, because of what's happened in vacuum of Syria...it's going to take time to roll them back and form regional coalition so we can reach out to Sunni tribes that ISIS has occupied.

"The bottom line is this. Our objective is clear, to degrade and destroy ISIS not just to Iraq but to the region and U.S."

"It's not only that we'll be bringing to justice those who perpetrated crimes against two fine young men, U.S will continue to lead regional and international efforts against barbaric and ultimately empty vision ISIS represents. It will take time, but it will get done"

"Horrific acts unite as a country....to take a fight against these terrorists. We will not forget and justice will be served."