He said America's resolve to help South Korea "has never been stronger"
Pence was speaking in the capital Seoul, hours after North Korea failed to launch a missile, which he described as a "provocation".
He addressed American troops based on the Korean peninsula at an Easter Service saying "This morning's provocation from the North is just the latest reminder of the risks each one of you face every day in the defence of the freedom of the people of South Korea and the defence of America in this part of the world."
He continued saying "In these troubled times in this part of the world your courage and your valour still amazes the American people."
"This is a challenging time, all over the world but especially here in the Asia-Pacific.
"The opportunity for me to be here today at such a time as this is a great … a privilege for me. But let me assure you, under President Trump's leadership our resolve has never been stronger."
He finished by saying "Korea has never been stronger. And with your help, and with God's help, freedom will ever prevail on this peninsula."
The failed missile attempt by North Korea was fired while Mr Pence was aboard his plane, Air Force Two, heading towards the South Korean capital.
An official aboard the aircraft told reporters that there was no need for the US to take action because North Korea's missile had failed.
The official also added that had Pyongyang carried out another nuclear test "other actions would have been taken by the US".
South Korea is the first stop on the Vice President's tour of Asia, he will also be visiting Japan, Indonesia and Australia during his trip.
Additional reporting IRN.