The 36-year-old believes that calling an end to his time with Denmark will prolong his club career and feels he has another three or four years left at the Britannia Stadium
The 36-year-old won an impressive 101 caps for Denmark over a 13-year span, but was ruled out of this year's European Championship due to a back injury he sustained in a friendly against Brazil.
Despite the decision to quit Denmark being difficult, Sorensen felt the timing was right in order to compete for a starting place at his club side.
"It's never easy to make that sort of decision when something has been such a big part of your life, as playing for my country has been for the last 10 to 12 years," Sorensen told The Mirror
"But I feel I have another three or four more years left in me yet, and this decision will enable me to focus on my club career. I felt it was the right time to step down.
"In many respects this is the start of something new for me, and I will be giving my all for Stoke from now on in the hope I can feature in the manager's plans."
Sorensen hopes to follow in the footsteps of fellow Premier League goalkeeper Brad Friedel, who at 41 is still playing at a very high level.
And with more recovery time available to him following his international retirement, Sorensen insists that his chances of playing for longer have increased.
"Going away on international duty was always very hard. It was 10 days virtually every month through the season where the training was very intense," he added.
"Now I will have more time to recover and keep the focus, which can only improve my chances of playing for much longer, which is what I want to do at club level."