INTRO
So you want to know how to make sure your fellow nations don't blow you up, huh? Well look no further, you've come to the right place! Out of all my years of experience on HE, its safe to say I have created a friendly and safe legacy in the community, and it's time I share it with other.
FIRST STEPS
Obviously, first, you need a nation. See making a nation guide. Now after you make a nation, don't be going around allying everyone. Lay low for a while, match anyone's requests, and try to stay friendly and neutral with everyone. Remember, always be kind to others so that they'll look at you favorable. Now, the next steps are the most crucial.
MAKE YOUR FIRST ALLIES
When you're ready to enter onto the galactic stage, go for a few smaller nations as allies, and 1-2 bigger ones. Examples would be: UFP (sorry killer), CDM, and then Nova. Some good big nations to ally with (if they'll ally with you) are ImperialNova, Orovika, Shadow, and Vega. I recommend staying away from pirate nations such as VaskAuthority, but they are an option. While big nation are good to ally with for materials and big protection, you'll have to really show them you're worth it. A few smaller allies (I.E. TheGalacticEmpire and UFP) could really help you grow into getting an allyship with the big dogs. But you need to know how to talk to them, and not get blown up.
HOW TO DIPLOMACY
Now that you have allies, how do you talk to them? And how do you talk to others without getting blown up?
First off, never resort to insulting or cussing at each other. This not only makes them hostile with you, but could also get staff involved.
Coming from a very experienced and likeable diplomat, the best way to talk to people is in a calm and respectful manner. Try your hardest to not be insensitive to others, and talk out the problem. If needed, show a little force, but not too much.
WHAT IF ENEMY?
So you've tried everything, and now you have a war. First step is to call on any allies you have, and to use the fact that a lot of people like you to gather support. ALWAYS try to make it a defense war. Then, hit your enemy a few times, get hit a few times, and then talk out peace. When talking out peace, never try to kill your enemy while talking. Always make sure the terms are fair, and that the enemy simply won't take the terms and then restart the war.
FURTHER ADVICE
As a diplomat expert, there's not much more I can give. Just remember, always be kind to others, try your hardest to not be insensitive to others, and ALWAYS remember, kindness is the most effective way of making friends and allies on the server!