Angela Merkel's flight to India was delayed as her flight was denied overflight of Iranian airspace. It appears this was in retaliation for the European Union's (EU) extension of economic sanctions against Iran for failing to continue talks about the Iranian nuclear weapons program. According to Fox News, Chancellor Merkel said "this action shows a disrespect for Germany and we will not accept it".
The whole incident was only reported as a ticker item on Fox News. However, the emotion of both Iran and Germany can spell further deteriorations in that region. We have two very proud cultures snipping at other. First, we have the Persians (now known as Iran) re-asserting itself as a world player only to be smacked down by the upstart Europeans and Americans. Second, Germany is a proud race of warriors who seem to be re-emerging on the world front. In the past, Germany was reluctant to send combat forces into conflicts. That reluctance seems to be diminishing opening the door for two proud cultures to start staring at one another with more than diplomatic actions in mind.
Update, here is an article on the report.