World Cup 2018 groups: Group D teams guide and latest analysis ARGENTINA A team featuring Lionel Messi can never be ignored, even though the 2014 runners-up barely made it to this World Cup. But other key talent like Sergio Aguero and Gonzalo Higuain have been far from top form for Argentina. That is why little-known Boca Juniors striker Daria Benedetto has been deployed up front. Goalkeepers: Sergio Romero (Manchester United), Wilfredo Caballero (Chelsea), Franco Armani (River Plate) Defenders: Gabriel Mercado (Sevilla), Cristian Ansaldi (Torino), Nicolas Otamendi (Manchester City), Federico Fazio (Roma), Marcos Rojo (Manchester United), Nicolas Tagliafico (Ajax), Marcos Acuna (Sporting) Midfielders: Javier Mascherano (Hebei China Fortune), Eduardo Salvio (Benfica), Lucas Biglia (Milan), Giovani Lo Celso (Paris Saint-Germain), Ever Banega (Sevilla), Enzo Perez (River Plate), Maximiliano Meza (Independiente), Angel Di Maria (Paris Saint-Germain), Cristian Pavon (Boca Juniors) Forwards: Paulo Dybala (Juventus), Lionel Messi (Barcelona), Sergio Aguero (Manchester City), Gonzalo Higuain (Juventus) Key player: Lionel Messi (Barcelona) - Doubted by fans, yet the five-time world player of the year delivered. Argentina would not be going to Russia without his goals and leadership. Turns 31 during a tournament that could yet crown his career. Coach: Jorge Sampaoli - The 57-year-old Argentine is his country's third coach in less than a year. His team has not impressed so far, with only one win in four official matches. His team is the biggest question mark of this World Cup. ICELAND With just 330,000 people, Iceland are the smallest country ever at the World Cup. The city of Moscow alone outnumbers Iceland's entire population 40 times over, but this is a team of giant-killers. Last year's run to the Euro 2016 quarter-finals, knocking out England on a memorable night in Nice, showed the talent and determination in Iceland's team. Qualifying for the World Cup ahead of Croatia and Ukraine proved last year wasn't a one-off. Expecting more success in Russia might be optimistic, but with Iceland's passionate fans and their "thunderclap" chant, nothing can be ruled out. 23-man squad: Goalkeepers: Hannes Halldorsson (Randers), Runar Runarsson (Nordsjaelland), Frederik Schram (Roskilde) Defenders: Kari Arnason (Aberdeen), Holmar Eyjolfsson (Levski Sofia), Rurik Gislason (Sandhausen), Sverrir Ingason (Rostov), Hordur Magnusson (Bristol City), Birkir Saevarsson (Valur), Ragnar Sigurdsson (Rostov), Ari Skulason (Lokeren) Midfielders: Birkir Bjarnason (Aston Villa), Samuel Fridjonsson (Valerenga), Johann Gudmundsson (Burnley), Aron Gunnarsson (Cardiff City), Emil Hallfredsson (Udinese), Gylfi Sigurdsson (Everton), Olafur Skulason (Karabukspor), Arnor Traustason (Malmo) Forwards: Jon Bodvarsson (Reading), Alfred Finnbogason (Augsburg), Albert Gudmundsson (PSV), Bjorn Sigurdarson (Rostov) Key player: Aron Gunnarsson (Cardiff City) - Gylfi Sigurdsson may be the main attacking threat, but bearded captain Gunnarsson inspires a gritty team. Coach: Heimir Hallgrimsson - Not many teams are coached by a dentist, but Iceland aren't most teams. Took sole charge after co-coach Lars Lagerback left last year. CROATIA Croatia had to squeeze through the play-offs for the second straight World Cup despite having at their disposal a generation of players capable of making the difference. Led by playmaker Luka Modric alongside Mario Mandzukic, Ivan Rakitic and Ivan Perisic, Croatia are on paper a tough team to beat. They need the players to replicate their club form on the international stage at a major tournament. 23-man squad: Goalkeepers: Danijel Subasic (Monaco), Lovre Kalinic (Gent), Dominik Livakovic (Dinamo Zagreb) Defenders: Vedran Corluka (Lokomotiv Moscow), Domagoj Vida (Besiktas), Ivan Strinic (Sampdoria), Dejan Lovren (Liverpool), Sime Vrsaljko (Atletico Madrid), Josip Pivaric (Dynamo Kiev), Tin Jedvaj (Bayer Leverkusen), Duje Caleta-Car (Red Bull Salzburg) Midfielders: Luka Modric (Real Madrid), Ivan Rakitic (Barcelona), Mateo Kovacic (Real Madrid), Milan Badelj (Fiorentina), Marcelo Brozovic (Inter Milan), Filip Bradaric (Rijeka) Forwards: Mario Mandzukic (Juventus), Ivan Perisic (Inter Milan), Nikola Kalinic (AC Milan), Andrej Kramaric (Hoffenheim), Marko Pjaca (Schalke), Ante Rebic (Eintracht Frankfurt) Key player: Luka Modric (Real Madrid) - Croatia look at Modric, their undisputable leader in hopes to emulate the third-place finish at the 1998 World Cup. Coach: Zlatko Dalic - Took charge of a critical situation with one game remaining in the qualifying. Presided over a victory over Ukraine 2-0, then Croatia overcame Greece in the play-offs. NIGERIA The first team from Africa to qualify, and convincingly. They won a group that contained current African champion Cameroon, former champion Zambia, and Algeria. A 4-0 victory over Cameroon emphasised that when they get it right the Super Eagles can be a handful for any side. Argentina found that out in November when Nigeria came back from 2-0 down to win their friendly 4-2 in Russia. Nigeria have qualified for five of the last six World Cups. 23-man final squad Goalkeepers: Ikechukwu Ezenwa (Enyimba), Francis Uzoho (Deportivo La Coruna), Daniel Akpeyi (Chippa United). Defenders: Abdullahi Shehu (Bursaspor), Tyronne Ebuehi (Den Haag), Elderson Echiejile (Brugge), Bryan Idowu (Amkar Perm), Chidozie Awaziem (Nantes), William Ekong (Bursaspor), Leon Balogun (Brighton), Kenneth Omeruo (Kasimpasa). Midfielders: John Obi Mikel (Tianjin TEDA), Ogenyi Onazi (Trabzonspor), Wilfred Ndidi (Leicester), Oghenekaro Etebo (Las Palmas), John Ogu (Hapoel Be'er Sheva), Joel Obi (Torino). Forwards: Ahmed Musa (Leicester), Kelechi Iheanacho (Leicester), Victor Moses (Chelsea), Odion Ighalo (Changchun Yatai), Alex Iwobi (Arsenal), Simeon Nwankwo (Crotone) Key player: John Obi Mikel (Tianjin Teda, China) - While Nigeria have attacking talent aplenty with Alex Iwobi, Kelechi Iheanacho and Victor Moses, captain Mikel has provided crucial stability in central midfield. Coach: Gernot Rohr - Like Mikel, Rohr has been a calming influence for Nigeria, which has changed coaches eight times since the last World Cup in Brazil. Source: Telegraph ---DECRYPTED---