1) the ME oil fields were not vital,they were insignifiant (4 % of the world production)
We're not talking about world production, the Middle East oilfields certainly weren't insignificant to Germany.
2)As I already said ,the British informations were not reliable,and,whatever :there was NOTHING Stalin could do:his army was no good.With or without the British intelligence,the Soviet army on the western border was doomed .
Just because you said British information wasn't reliable doesn't mean it wasn't. As it was, British information WAS reliable because the warning Stalin got from the British Ambassador was in fact spot on.
In 1941, Stalin received a stream of information from military intelligence and spies, that Germany is going to invade Russia, as Hitler promised since the 1920s. After discussions, Stalin decided that the information was inconclusive and perhaps deliberate disinformation, and decided that there will be no invasion. As the invasion came nearer, the stream of information indicating invasion intensified, but then Stalin forbid his advisors from further disturbing him with it. Anyone who still suggested that there might be a German invasion, risked execution. Fear was such that when the invasion started, no one dared to awake Stalin and tell him about it, until Zhukov, the deputy supreme commander, told Stalin's bodyguards that he takes responsibility for awakening the dictator and telling him the bad news.
3)About Fortitude :the Germans did not believe that Overlord was a diversionary attack on 7 june,the SSPzD Das Reich was moving from Toulouse to Normandy, on 10 june 2 SSPzD in the East were ordered to go to France. And,with or without Fortitude,Overlord would succeed
How strange that Hitler was convinced that the "real" invasion would be Calais.
When the Allies actually landed at Normandy, Hitler suspected it was a deception and that their real target was northeast of there, in the Pas-de-Calais region. The upshot for the Allies was that 19 nearby German divisions, including six powerful panzer divisions, spent D-Day idle. Their early commitment to Normandy would have made the Allied beaches a living hell, and might even have thrown the invasion back into the sea. Over the succeeding weeks, Hitler became ever more convinced that the Normandy invasion was a ruse, and it was not until the end of July that he finally approved the movement of a single division from Fifteenth Army, which was guarding the coast near Pas-de-Calais. Once again, it was too late. By the time reinforcing divisions arrived, the German line was hanging by a thread.
In a further blunder on Hitler's part, he had ordered the Normandy front held at all cost. This ensured that when his forces inevitably did give way, the surviving skeleton formations would be incapable of conducting mobile operations or making a stand much short of the defensive fortifications along Germany's western prewar borders.
4)About MG :it is the same :if the Allies had believed there were some (very small ) Pz units in the region,operation MG still would fail
Senior British officers were not only warned by Enigma that there were SS Panzer units in the area, but also warned by the Dutch resistance WITH PHOTOGRAPHIC EVIDENCE!
5) About the Battle of the Atlantic :tthere is NO reliable figure on how much GRT was saved by Enigma ,and,without Enigma,the Allies still would win the Battle of the Atlantic,because(a.o.) they had more and superior ASW.
Ultra intelligence made a very significant contribution in the Battle of the Atlantic. Winston Churchill wrote "The only thing that ever really frightened me during the war was the U-boat peril." The decryption of Enigma signals to the U-boats was much more difficult than those of the Luftwaffe. It was not until June 1941 that Bletchley Park was able to read a significant amount of this traffic currently. Transatlantic convoys were then diverted away from the U-boat "wolfpacks", and U-boat supply vessels sunk. On 1 February 1942, Enigma U-boat traffic became unreadable because of the introduction of a different 4-rotor Enigma machine. This situation persisted until December 1942, although other German naval Enigma messages were still being deciphered, such as those of the U-boat training command at Kiel. From December 1942 to the end of the war, Ultra allowed Allied convoys to evade U-boat patrol lines, and guided Allied anti-submarine forces to the location of U-boats at sea.
By that juncture, Allies had all the elements they needed to wage the Battle of the Atlantic: radar, sonar, improved depth charges, and long-range aircraft. But the decrypts maximized their usefulness and, moreover, transformed the nature of the battle. The Allies not only diverted convoys from wolf packs, but zeroed in on both combat U-boats and the oversized supply U-boats that enabled the combat boats to greatly extend their time at sea. The hunters became the hunted.
By May 1943, U-boat losses were so heavy that Admiral Karl Dönitz withdrew them from the North Atlantic. Although the battle continued at a reduced tempo, the Allies had effectively won. According to military historians Allan R. Millett and Williamson Murray, "Ultra's contribution to the antisubmarine battle now became the most significant intelligence victory of the war, and the only episode in which intelligence alone had a decisive impact on military operations."
What would have happened if the Allies had never cracked the Triton code? It must be acknowledged that the Kriegsmarine could never have achieved its goal of knocking Britain out of the war. British planners estimated that Britain needed to import between 9.8 and 11.5 million tons of supplies per year. The U-boats never came close to sinking that amount. But the effect would nonetheless have been catastrophic. Unable to divert convoys around known German wolf packs, the Allies would have suffered much heavier losses. They would have had much greater difficulty in finding and destroying German U-boats.
Historian David Kahn is probably on target when he concludes that a failure to crack the code would have delayed the Allied ground offensives by several months—and in the case of the Normandy invasion, pushed it back into 1945. Based on shipping figures, Kahn estimates that the Mediterranean offensives would have been delayed by three months, and that to get sufficient tonnage it would have been necessary to transfer vessels from the Pacific, thereby delaying operations in that theater as well. The increased number of U-boats (because of reduced losses) would also have made Lend-Lease supply to the Soviet Union far more problematic. Barring the atomic bomb, the war might have been extended by as much as two years, until 1947.
You are again talking complete and utter nonsense sunbeam.