On top of fears of an outbreak of H1N1 flu during Hajj, Saudi Arabia has  found it also has a number of security issues to be concerned about this year.  One of those issues has been rising tensions between Saudi and nearby Iran.
 In the past, Iranian pilgrims have complained, held protests and even clashed  with police over being mistreated during Hajj. This time, though, the complaints  have been over Saudi's  part  in operations against Houthi fighters  in northern Yemen.
  An annual pre-Hajj event, Saudi authorities held a massive security forces  demonstration at Arafat on Sunday evening, showing off the various battalions  and personnel that are currently being deployed for the "protection of the  pilgrims".
  The military parade is largely seen as a show of force by the government,  meant to deter any and all who might seek to disrupt the holy pilgrimage.
  Speaking at the parade, Muhammad bin Abdullah al-Shahrani, head of emergency  special forces that oversees Hajj security, said more than 100,000 personnel  were being deployed this year. That number includes soldiers and security  forces, police and emergency response teams.
  It would seem the entirety of that force - from bomb squads to K9 units, and  including ambulances, helicopters and armoured personnel carriers - were on  display on Sunday.
  After the sun set, the closely-controlled crowd of cameramen and journalists  were corralled into a news conference with Prince Naif bin Abdul Aziz, Saudi's  interior minister. 
  When asked about tensions with Iran and the possibility of a protest, Naif  responded saying that if anyone were to threaten the sanctity of Hajj, they  would be dealt with by force.
  However, in response to follow-up questions, Naif clarified that he does  not expect any disruptions of Hajj by Iranian pilgrims this year, as  officials from Tehran had recently arrived in the kingdom, offering their  reassurances and guarantees that no protests would be held.
  On the subject of Yemen, Naif felt the need to reiterate that the Saudi and  Yemeni governments were united against the "bad people", adding that fighting  with the Houthis had nothing to do with Hajj.
 With a word of praise for his men, Naif said he was completely satisfied  with the security preparations being taken this year.
 Al  Jazeera