Tonight, when President Donald Trump steps into the House chamber to deliver his State of the Union address, it will undoubtedly be overshadowed by the prospect of coming conflict with Iran. Tehran will be up late (or early), carefully scrutinizing every word of the US leader, anticipating the what's next at a moment of massive Pentagon build-up in the region, including no less than two carrier groups. Iranian leadership, looking toward the big Trump speech tonight, has just offered that it's ready to do anything necessary…