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The deuteron form factors are calculated using two model wave functionsobtained from the 2007 CST high precision fits to $np$ scattering data.Included in the calculation are a new class of isoscalar $np$ interactioncurrents which are automatically generated by the nuclear force model used inthese fits. If the nuclear model WJC2 is used, a precision fit ($\chi^2$/datum$\eqsim1$) to the Sick Global Analysis (GA) of all $ed$ elastic scattering datacan be obtained by adjusting the unknown off-shell nucleon form factors$F_3(Q^2)$ (discussed before) and $F_4(Q^2)$ (introduced in this paper), andpredicting the high $Q^2$ behavior of the neutron charge form factor$G_{En}(Q^2)$ well beyond the region where it has been measured directly.Relativistic corrections, isoscalar interaction currents, and off-shell effectsare defined, discussed, and their size displayed. A rationale for extending$ed$ elastic scattering measurements to higher $Q^2$ is presented.

Covariant Spectator Theory of $np$ scattering: Deuteron form factors