Reuters: "Iran president wants Israel 'wiped off the map'"

OK, let's give Reuters credit for at least covering the story. Now, on to the next observation--note the following:

Tehran denies accusations it trains and arms Palestinian militant groups, saying it offers only moral support.

What disease causes journalists to write sentences like this? Why is the truth or falsehood of this assertion so completely off-limits? There is no evidence for Iran's offering material support to Palestinian terorist groups that could be included in the story without violating some sort of objectivity standard?