MutleyRules wrote:
I'd don't get that and never have....why would they want missiles along the Russian border when they have missiles called intercontinental ballistic missiles??

Same reason as Amazon have warehouses all over the place
Seriously though, One big reason is that much of the world has allowed the United States to take on a large portion of their defence in exchange for allowing us to station troops there. For instance, of the 32 members of NATO, only about 5 reach the required threshold of spending 2% of their GDP on defence. Most of them have allowed the US to take the burden of defence in exchange for not having to spend that money. Similarly, Japan since WW2 is mostly demilitarized and relies on the US for defence.
This is largely a win-win situation for all sides, as it allows the US to project power across the globe and keep its allies in line with its strategic objectives, and the other countries don't need to keep large standing armies and stockpiles. Plus, it's largely contributed to the lack of conflict in the Western world and the lack of major wars in the last century. Without standing armies to wage wars, countries aren't as bellicose. One reason the Korean War has never reignited is the commitment of the US to defend South Korea from any future incursions from the North. North Korea might be able to take South Korea one-on-one, but there's no way it could bear the brunt of the full US military. Of course you have to believe that North Korea or Russia have plans for expansion, personally I don't, but there is a lot of money to be made in the military industrial complex, so its suits the narratives of these war mongering neo- liberal psychopaths to scare us in to thinking those countries that refuse to play ball and adopt the dollar want to take over the world. BRICS is going to change all that. Strange how the standard of living is going up for many in the BRICS countries, yet in the USA and UK the standard of living is getting worse, they are building infrastructure, whilst we are spending our money on war, and selling off our infrastructure to any foreign investor who'll buy it, more fool you.
Other countries like Djibouti who aren't in our network of mutual defence alliances, but are strategically located, can trade military basing rights for economic or political advantages, and regimes who allow America to station troops in their country give America a stake in keeping them in power, making coups or revolts by Socialists who want to improve the lot of the majority of people not just the top 10%, without exploitation by rich Western countries less likely to succeed.