How exactly? China and Russia might veto it and if they REALLY want to sanction Iran, they'd need to set up a naval blockade, hence war.
The Wall Street Journal reported that last week there were hundreds of foreign business men from various countries visiting Iran, including Europe.
There is still a great deal of business that occurs between Iran and the West.
Western countries can decide to sanction Iran outside of the United Nations.
France, England, Germany, Holland, Denmark, Italy and other such countries can decide to close their ports to ships and aircraft that are traveling to or from Iran.
There are still some banks that do business in the West, there are embassies open there, and many of the current sanctions are not strictly enforced.
The sanctions can become much worse.
Missiles that can hit Europe would be a strategic blunder.
We must also consider the political and economic and social results of our actions.
I don't mean to derail the discussion by talking about sanctions.
My point is that Missiles that can hit Western Europe are a mistake for now.
As for resources, imagine that you have 12 scientists, 28 engineers, and 112 technicians of varying skills. You have a 100 million Euro budget to last you for several years.
You can work on:
missiles that can strike Europe,
missiles that can alter course to evade Arrow systems while carrying heavier warheads,
missiles that can have multiple reentry war heads to evade Arrow systems,
missiles that can pin point satellites,
It is better to take out the first option to focus more on the other 3 options.
For example, instead of 3 scientists working on each of the four projects, you could have four scientists working on each of the 3 projects.
And when it comes time for manufacturing, you only have 3 types of missiles to produce instead of 4. That means 3 factories instead of 4, or six factories instead of 8.
And when it comes to number of missiles, you could have 30 missiles that can hit Israhell instead of 20 for Israhell and 10 for Europe.