Yes...
Pakistan is dangerous but multifaceted, they "help" at the same time as hindering and attacking.
North Korea is bankrupt and starving, China won't let them do anything crazy. China are their biggest sponsor and only friend.
Iran supports Hamas, Hezbollah, Shiite militia in Iraq, insurgents in Afghan, set off bombs around the world (Thailand, Bulgaria, India) just in this year.
People with responsibilty and power who potentially have the power to use any WMDs also have stated that Israel has no right to exist and should be wiped off the map.
Theyve threatened to close the strait of Hormuz, captured british sailors and held them for weeks. In the past theve stormed embassies, taken hostages (iranian hostage crisis) and attacked the British embassy in Tehran more recently.
So yeah they're a lot more dangerous.
BBC News - Iran protesters storm UK embassy in Tehran
Iranian Embassy Siege in London - Intervention by S.A.S. - YouTube
BBC NEWS | In pictures: Iran hostage crisis