"The level of co-operation between two countries has been good, " the official added.
The president defended his comments to Mr. Medvedev, saying "arms control is extraordinarily complex" and requires deep consultation between two countries.
Neither country is accustomed to, let alone comfortable with, an international system whose functionality rides in large measure on cooperation between two countries.
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Not only must investors regard assets in different countries as perfect substitutes, but expected changes in exchange rates must also equal the expected inflation differential between two countries.
U.S. officials hope the discussions will jumpstart the process of restoring full diplomatic relations and exchanging ambassadors between two countries that Washington sees as vital strategic partners in the volatile Middle East.
The merits of these are that they allow any airline to fly where and when it wants between two countries, with no limits on capacity or need for official approval of fares.
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Again, I think a mature relationship between two countries allows you to do things like working on nonproliferation on North Korea, or working on a response to the global economic crisis, but also have disagreements.
The Canadian-American border, the longest border in the world between two countries, is as willful an act of imagination as a work of conceptual curtaining by Christo, but its existence has made two separate peoples, with two separate stories.
With respect to the conversation that took place between Prime Minister Netanyahu and Prime Minister Erdogan, I have long said that it is in both the interest of Israel and Turkey to restore normal relations between two countries that have historically had good ties.
Flights between the two destinations took a dip when tensions between the two countries flared up in September.
The two leaders agreed to continued consultation and cooperation between the two countries to achieve the vision outlined in the UN Charter of a more peaceful and secure world.
U.S. and Chinese officials at "the highest levels of both governments" hammered out the new arrangement during the day Friday, which also saw the conclusion of a two-day summit on economic and strategic issues between the two countries.
When we met for the first time two years ago, we agreed to take the partnership between our two countries to a new level.
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So this can be a win-win situation, where not only are we making our regulatory systems more efficient in our respective countries, but we're also seeing greater convergence between our two countries.
Overall, though, I'm pleased to say that the relationship between our two countries is extremely strong, as reflected not only in the relationship between our governments but also the people-to-people contacts.
Diplomatic and trade relations between the two countries now ride on the fate of the extradition bill.
Venezuela's foreign minister said the meeting would "derail" good relations between the two countries.
Relations between the two countries have been strained, most recently over the conflict in Syria.
The recent talks were intended to help rebuild trust and cooperation between the two countries.
And to try to reflect on what it means for the relationship between our two countries.
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"These are bilateral negotiations between two sovereign countries, " U.S. Embassy spokeswoman Mirembe Nantongo said.
This comes with the offer of a brand-new 10-year defence deal between the two countries.
Finally, we recognized the importance of continued high-level exchange and consultations between our two countries.
Trade between the two countries has been growing steadily, and is relatively evenly balanced.
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