There will be no rest for many West Ham United players during next week's international break.
Scott Parker, Lars Jacobsen, Pablo Barrera, Victor Obinna, Robbie Keane, James Tomkins and Marek Stech have already been called-up by their respective nations.
Parker and Jacobsen could come face-to-face when England travel to take on Denmark in Copenhagen on Wednesday 9 February.
The same day, Barrera's Mexico face Bosnia-Herzegovina in the American city of Atlanta, while Obinna could line up for Nigeria against Sierra Leone in Lagos and Stech has been included in the Czech Republic U21 squad for an international friendly with Netherlands in Waalwijk.
Nearer to home, Tomkins is in the England Under-21 squad for the first time in nearly 18 months for a friendly meeting with Italy in Empoli on the afternoon of Tuesday 8 February.
That evening, Keane (pictured) could captain Republic of Ireland in their opening Carling Nations Cup fixture against Wales in Dublin. Danny Gabbidon has been forced to withdraw from the same match with a hamstring injury suffered in Wednesday evening's 3-1 Barclays Premier League victory at Blackpool.
Tuesday will also see Academy midfielder Eoin Wearen turn out for Republic of Ireland U19s against Croatia in Zagreb, while his compatriot Kieran Sadlier will represent the Irish U17s in two friendlies against Italy in Lecce on 8 and 10 February.
Looking further forward, Matthias Fanimo and Blair Turgott are both in England's U17 squad for the Algarve Tournament, which will see the Young Lions take on Romania, Germany and hosts Portugal at the end of this month.
The U17s will use the tournament as preparation for their UEFA European U17 Championship Elite Round qualifiers at the end of March, where they have been drawn to face Northern Ireland, Spain and mini-group hosts Belgium.
Defending champions England won the European U17 title last summer, with West Ham's Robert Hall a member of the winning squad.
Finally, Leo Chambers has been named in England's U16 squad for a friendly international meeting with Slovenia in Koper on Tuesday 15 February.