How to tire out my dog with these issues?

So my dog use to get plenty of exercise but some new people moved into our neighborhood and one has a doberman and the other Alaskan Malamute and since they moved in i haven't been able to walk him because if i walk him one way down the street the Alaskan Malamute jumps the fence and tries to attack us but if i go the other way the doberman does the same. So he has only been getting walked 4 times a week when i have time to take him to the trail. So how do i handle this i have tried fetch in our yard he wont chase and i tried laser lights around the house he wont chase them but even if that worked it wouldn't supplement a walk. So how can i handle this animals so i can walk him?