AGREEMENT REGARDING THE JOINT FILING OF SCHEDULE 13G

Exhibit 2 to Schedule 13G

AGREEMENT REGARDING THE JOINT FILING OF SCHEDULE 13G

The undersigned hereby agree as follows:

(i) Each of them is individually eligible to use the Schedule 13G to which this Exhibit 2 is attached, and such Schedule 13G is filed on behalf of each of them; and

(ii) Each of them is responsible for the timely filing of such Schedule 13G and any amendments thereto, and for the completeness and accuracy of the information
concerning such person contained therein; but none of them is responsible for the completeness or accuracy of the information concerning the other persons making the filing, unless such person knows or has reason to believe that such information is inaccurate.

Camelot Securities Limited

Signature: /s/ Xxxxxx Xxxxxx
Name: Xxxxxx Xxxxxx
Title: Director
Date:12 March 2007

Janus Limited, acting on behalf of that certain trust formed under the laws of The Bermuda Islands as of 14 September 2005

Signature: /s/ Xxxx Xxxxxxxx
Name: Xxxx Xxxxxxxx
Title: Director
Date:12 March 2007

Galahad Securities Limited

Signature: /s/ Xxxx Xxxxxxxx
Name: Xxxx Xxxxxxxx
Title: Director
Date:12 March 2007

Legatum Capital Limited

Signature: /s/ Xxxx Xxxxxxxx
Name: Xxxx Xxxxxxxx
Title: Director
Date:12 March 2007

Legatum Global Holdings Limited

Signature: /s/ Xxxx Xxxxxxxx
Name: Xxxx Xxxxxxxx
Title: Director
Date:12 March 2007

Legatum Global Investment Limited

Signature: /s/ Xxxx Xxxxxxxx
Name: Xxxx Xxxxxxxx
Title: Director
Date:12 March 2007

Senate Limited, acting on behalf of that certain trust formed under the laws of The Cayman Islands as of 1 July 1996

Signature: /s/ Xxxx Xxxxxxxx
Name: Xxxx Xxxxxxxx
Title: Director
Date:12 March 2007