Hur lång tid tar det för USA att erövra Iran?

In any crossing of the Suez Canal by Egyptian forces, success was highly dependent on the performance of the Egyptian Corps of Engineers, which had several daunting tasks to accomplish. Israeli engineers had constructed a massive artificial sand barrier spanning 160 kilometers (99 mi) of the canal's east bank (except for the Great Bitter Lake, where the width of the canal made a crossing unlikely). To prevent erosion, the sand barrier was supported by concrete, which was one meter (3⅓ ft) above the water at high tide, and three meters (10 ft) above water at low tide. The canal was 180–220 meters (590–720 ft) wide and approximately 18 meters (59 ft) deep. Engineers had to clear seventy passages through this sand wall, each seven meters (23 ft) wide. This meant the removal of 1,500 cubic meters (2,000 cu yd) of sand for each passage. Initially, conventional methods were tested for breaching the sand wall. It was found that, to clear a single passage required 60 men, 1 bulldozer, 600 lb of explosives and five to six hours, uninterrupted by enemy fire. Since the crossing sites would likely be congested and under enemy fire, these methods proved to be impractical and too costly.[35]
The solution to this dilemma was simple but nonetheless ingenious. Late in 1971, an Egyptian officer suggested the use of small, light, gasoline fueled pumps that could be ferried across the canal in inflatable rafts to blast through the sand barrier. The suggestion proved worthwhile, and the Egyptian Military ordered some 300 British-made pumps. Tests showed that five of these pumps could remove 1,500 cubic meters of sand in three hours. In 1972 another 150 more powerful German-made pumps were purchased. A combination of three British-made and two German-made pumps made it possible to clear a passage in two hours.[35]

Russia is offering Iran to purchase S-300VM Antey-2500 air defense systems, according to defense industry sources. It’s a cousin of the S-300 long-range surface-to-air missile family. S-300s were developed for the Soviet air defense forces, but the ground forces, an organizationally distinct branch of the army, wanted a similar system tailored for their own needs. On their order the S-300V was developed and later upgraded to the better S-300VM version.

Military experts believe that the Antey-2500 deal would be more attractive to Tehran. The system was tailored to intercept tactical ballistic missiles. A possible Israeli attack on Iran is expected to start with a massive missile attack on Iran’s key air defense sites and military air bases before follow-up airstrikes at its fortified nuclear enrichment facilities. S-300VMs are well-suited to counter this threat, Kommersant said.