Iran as regional or international power

I dont know what is the point Iran trying to make when they announce all these war games and rehearsals they are conducting on land and in sea. Their enemy, if it is Israel or the US, know exactly what they have and what they dont, they know what their strong points and their weaknesses, so it is not for them. The only target audience for these reports and announcements are the public audience, the normal people in the streets in Middle East or larger Asia.
Today they announced they are sending a feet of 24 war ships to the far east, but what are they hopping to gain from all this, how they are planning to benefit from it. I dont know personally, but I am sure they have something on their mind beside creating evil enemy for the US (to replace the AQ and the Russian before that).