Ahmadinejad is hosting Putin for the first time
Newspapers in Iran and Russia on Tuesday consider President Vladimir Putin's historic visit to Iran for the Caspian Sea summit.
Three Iranian dailies are hoping that the summit will be a rallying point against US influence in the region. But others are more wary of Russia's intentions.
The reports of suicide bombers aiming
to assassinate Putin during his visit have grabbed the attention of the Russian papers, with one suggesting that the West made up the rumour to undermine the summit.
The Tehran summit opens a new horizon in the world in which the current monopolised atmosphere led by America will gradually decay and be replaced by multilateral agreements and treaties... America and its European allies have done their best to stop the presidents of the Caspian states attending, even by launching psychological warfare, but they couldn't achieve their objectives.
Iran's JOMHURI-YE ESLAMI
Although the most important part of the summit of the leaders of Caspian Sea states is to make decisions on the legal position of the sea, other important issues can be discussed... Iran is ready to do its best to form a stable peace front in the region without the presence of America.
The presence of Tehran and Moscow in the political equations of the region could change the Caspian into a focal point against the influence of America and its allies in Central Asia... Unity over the Caspian Sea could be the Achilles' heel of the West.
Iran's E'TEMAD-E MELLI
Putin is in Tehran... and it is an important political event. However Iranians are more anxious and worried about the result of the Caspian summit... Putin should bear in mind that he cannot take more shares from the Caspian Sea than others.
Many experts believe that Russia is not a reliable partner and they can present many examples to prove it... In Iran's nuclear tensions Russia played the Iran card very well against its traditional rival - the USA - and got many concessions from the West.
Moscow is seriously worried about substantial relations between Azerbaijan, Kyrgyzstan and America, so it does its best to sabotage Iran-US relations by adopting its special double-standard strategy against Iran and the West.
Iran's excellent relations with Arab countries have made Russia regard Iran as its gate to the thriving market of the littoral states of the Persian Gulf. These factors make Russia keep its positive relations with Iran more than ever.
VLADIMIR KUZMIN in Russia's ROSSIYSKAYA GAZETA
Putin has not hidden the fact that in his contacts with the Iranian leadership he regularly discussed the situation concerning Iran's nuclear programme. This time will be no exception.
SERGEY KARAGANOV in Russia's OSSIYSKAYA GAZETA
Putin will try to get the Iranian authorities to agree to stop the military part of their nuclear programme... The main question is whether Putin will manage to secure any guarantees from Tehran on that score. Until now the Iranian authorities have repeatedly made empty promises.
GENNADIY CHARODEYEV in Russia's TRUD
The news that a group of terrorist suicide bombers was preparing an attempt on Vladimir Putin's life in Iran produced an earth-shattering effect.
MIKHAIL LEONTYEV in Russia's KOMSOMOLSKAYA PRAVDA
It is very likely that the USA is behind the "assassination attempt" reports. Washington has the most to lose from stronger ties between Russia and Iran. Besides, it will become more difficult for the USA to plan strikes against Iran after Putin has visited Tehran.
IRINA RINAYEVA in Russia's MOSKOVSKIY KOMSOMOLETS
Sources close to the intelligence services have not ruled out the possibility that this was intended as a message to the Iranian security agencies. Those responsible for Putin's safety on the Russian side, having received some "food for thought", deliberately arranged a leak so that their colleagues in Iran "do not let their guard down".
BBC Monitoring selects and translates news from radio, television, press, news agencies and the internet from 150 countries in more than 70 languages. It is based in Caversham, UK, and has several bureaux abroad.