The Enigmatic Magnetic Bomb was the technology that made Australia the king of its areas. The surrounding countries around it couldn't do much against the Australians. They would often appeal to other nations that could counter it.
When the EMP technology was revealed to the world, the WGP had to change several of its protocols and defenses to counteract it. Although Australia could never defeat the WGP because they could not readily produce the EMP bombs, the weapon threatened the WGP. It was because of this that Australia was raised to a Titan class country. And it was because of this that the web of lies that Seeker instigated were things that didn't require much pushing.
The other Titan Class countries, such as New Great Britain, One China, and Russia, took advantage of the attack on New Birth Forth. Hence, during the Australian Avarice, they all sent to steal whatever technologies they still have as the EMP was a sought after technology.