Organizers of the June 13 grand gathering in Paris in support of democratic change in Iran announced on Monday that a total of 330 Iranian associations have been involved in the event’s ongoing mobilization effort.

The mobilization campaign is being carried out in 345 cities from 24 countries throughout Europe, North America, Australia, the Indian sub-continent, the Middle East and North Africa.

In some countries, including France, Germany, UK, Poland, Czech Republic, and Netherlands, associations of local citizens and supporters of the Iranian Resistance are playing an important role in the mobilization campaign, the event organizers said.

Lord Alex Carlile, a member of the United Kingdom’s House of Lords from the Liberal Democrat Party, has called on UK Prime Minister David Cameron to endorse the resistance movement to the mullahs’ regime in Iran.

Lord Carlile’s appeal came as Cameron was meeting with other world leaders in the G7 Summit in Germany.

Whether or not the UK remains part of the EU, and whether or not Prime Minister Cameron succeeds in renegotiating the UK’s terms under a new EU Treaty, the issue of Iran’s pursuit of nuclear weapons and Middle Eastern hegemony will remain an important issue for Europe, Lord Carlile wrote in the HUffington Post.

As more Iranian citizens are put to death in Iranian jails or subjected to long imprisonment for dissent and activism, a major rally this week in Paris can be a voice to affect U.S. policy, former U.S. Ambassador Ken Blackwell says.

“If you are paying attention to the Middle East, and thus to Iran, it would be prudent to also pay attention to France later this week. If you keep your eyes on Paris on June 13, you will witness to a powerful demonstration of opposition to Tehran’s clerical regime.”