..."because of this resistance, they will retreat..." Yes, they surely will. The so called The coalition the WILLING in Iraq has been broken down in the face of RESISTANCE of Iraqi People. The Western countries basically don't believe on what they are doing on Iraq and their attitudes against Iran. Spain, Italy, and British (many more) has been taking a distance from U.S. Policy in ME.
Australian police arrest 5 over shooting 'linked to terrorism' (Reuters)
from the article: Iran vows to show no 'weakness' over demands it halt nuclear program